Ninebot BT2928 User manual

Welcome
Engine Speaker User Manual
Thank you for choosing Ninebot Engine Speaker (hereinafter referred to “the speaker").
This product can be connected to mobile phones to play music, and can also be
connected to many Segway-Ninebot vehicle models. When connected to vehicles, it
can simulate different engine sound effects.
Enjoy these interesting and cool sound effects.

The manufacturer reserves the right to make changes to the product and update this manual at any time. Product parameters are subject to change without prior notice.
Visit www.segway.com to download the latest user materials

*Please check the packaging contents carefully. In case of any missing or damaged items, please call the after-sales service.
User Manual USB Type-C Charger CableThe Speaker Base

Contents
5
1 Product Diagram
2 Installation
3 Connect to a Vehicle (Vehicle Mode)
4 Connect to a Mobile Phone (Music Mode)
5 Charging
6 Button Functions
7. Meanings of Indicators
8 Applicable Models
9. Specifications
10. FAQs
11. Precautions
12. Trademarks and Legal Statements
13. After-sales Policy
1
2
3
4
4
5
5
6
6
7
7
8

1 Product Diagram
Bottom view Base
Horn
Indicator
Power switch
Volume -
Pause/Next
Mode
USB Type-C
Diaphragm on both sides
Bracket hook
Bracket hook
Bracket lock
Bracket lock
Anti-slip strip
Anti-slip strip
Storage slot
Strap
Disassembly switch
Strap hook
Bracket hook
Top view
1
Volume +

1. Place the base in a proper
position (as shown above, the
bracket hook is located below)
and wrap the strap around the
vehicle body.
2. Fasten the strap on the strap
hook of the base. Make sure it is
firmly fastened.
3. Press the remaining part of the
strap into the storage slot. 1. Align the holes on the bottom of
the speaker with those in the
base.
2. Press down until you hear a
"clicking" sound.
3. When removing the speaker,
press the disassembly switch
while lifting the speaker
upward.
2 Installation
Install the Base Install/Remove the Speaker
2
This chapter takes Ninebot GoKart Pro as an example. The specific
installation steps depend on the vehicle model.

3 Connect to a Vehicle (Vehicle Mode)
NOTE: Please ensure that the vehicle to be connected is turned on and the firmware has been upgraded to the latest version in the Segway-Ninebot App.
3
1. Press the power switch to turn on the speaker. The indicator is white by default. If the indicator is blue, please press
the Mode button to switch to the white indicator.
Tip:
After powered on, the speaker has two modes: vehicle mode (white light with engine sound) and music mode (blue
light with chord sound eect).
2. Press and hold the Mode button to start pairing. Please operate the vehicle according to the voice prompt to
complete the pairing. Once the pairing succeeds, the speaker will automatically connect to the vehicle, and the
indicator will be solid white. If the pairing fails, repeat this step.
Note:
· When connecting, please ensure that there is only one active vehicle within the range of the Bluetooth (about 10 m)
and the Bluetooth of the vehicle is not connected, otherwise the connection may not be successful.
· If the vehicle to be connected is Ninebot eScooter or Ninebot eMoped, please disable the "Ninebot AirLock"
function in Segway-Ninebot App, otherwise the speaker may not be connected.
· The speaker automatically connects the paired vehicle. If you need to connect the speaker to another vehicle,
please repeat this step.
3. After the speaker is successfully connected, press "Next" to change the engine sound eect.
Tip:
The speaker has 4 kinds of engine sound eects: single-cylinder engine, double-cylinder engine, V8 engine and V12
engine.

5 Charging
4 Connect to a Mobile Phone (Music Mode)
4
1. Press the power switch to turn on the speaker.
2. Short press the Mode button until the blue indicator is on and the chord sound eect is sounded.
3. Enable the Bluetooth on your mobile phone and connect to "Ninebot Engine Speaker". After pairing, the speaker can
play music from your mobile phone.
When the indicator flashes red, the speaker has low battery, please charge it immediately.
1. Open the rubber cover of the charging port;
2. Insert the charging cable to charge. The indicator is solid red during charging.
3. When the battery is full, the indicator will be solid green. Disconnect the charging cable when finished.

6 Button Functions
7 Meanings of Indicators
Short press to power on.
Short press to increase the volume by one bar.
Short press to reduce the volume by one bar.
In vehicle mode, short press to switch sound eects.
Short press to switch vehicle mode and music mode.
Long press to power o.
Self-balancing vehicles
Kickscooter
Electric Motorbike
Ninebot GoKart
Electric Bike
Ninebot S
Ninebot miniPRO
Ninebot S-PLUS
Ninebot Dynamic
Ninebot S-Max
Mi Electric Scooter
Ninebot KickScooter ES1/ES2/ES3/ES4
Ninebot KickScooter 22/E25/E45
Ninebot KickScooter MAX
Ninebot GoKart Kit
Ninebot GoKart Pro
Ninebot Kart Pro (Lamborghini Edition)
Ninebot eMoped C40*
Ninebot eMoped C60*
Ninebot eMoped C80*
Segway Dirt eBike X160
Segway Dirt eBike X260
Ninebot eScooter 80C*
Ninebot eScooter 125*
Ninebot eScooter 100*
Ninebot eScooter 200P*
Segway Dirt eBike X160
Segway Dirt eBike X260
Long press to quickly increase the volume.
Long press to quickly reduce the volume.
In music mode, short press to play/pause.
Long press to pair in vehicle mode.
Long press to disconnect/restore Bluetooth connection in music mode.
8 Applicable models
Power switch
Volume +
Volume-
Next
Mode switch
Vehicle mode
White flashes quickly
White double flashes
White flashes slowly
Solid white indicator
Blue flashes slowly
Solid blue indicator
Red flashes slowly
Solid red
Solid green
Not pairing a vehicle
Vehicle is pairing
Pairing a vehicle but it is not connected successfully.
Connected to the vehicle successfully
Not connected to mobile phone in music mode
Connected to mobile phone in music mode
Low battery
Charging
Fully charged
Music mode
Charging status
Function 1 Function 2 Vehicle Model
Indicator status Meaning
Button
5
*Please disable the
"Ninebot AirLock"
feature in the
Segway Ninebot
App, otherwise the
speaker may not be
connected.
Please scan the code
to learn about more
compatible models
and how to pair

10 FAQs
1. Check whether the speaker is paired or try to restart the speaker
2. Check whether the vehicle is powered on or try restart the vehicle
3. Are there any other applicable vehicles around? If yes, please turn them o.
4. Check whether the Bluetooth of the vehicle is connected
1. Check the volume and adjust to the appropriate value
2. In case of low battery voltage, please charge the battery
1. Is the vehicle out of the eective connection distance of the speaker
2. There is obstacle between the speaker and the vehicle.
1. Is the battery low?
2. Charge the speaker and turn it on
Contact the ocial after-sales service for support.
Product name
Product model
Dimensions (length × width × height)
Net weight
IP rating
Button functions
Charging port
Dimensions
Material
Specifications
Power
Bluetooth protocol
Bluetooth version
Frequency
Working distance
Number of channels
Output power (Max)
Rated power
Frequency range
Signal to noise ratio
Rated capacity
Play time
Charging voltage
Charging time
Storage environment
Operating environment
Ninebot Engine Speaker
BT2928
248 × 83 × 77 mm
715g
IP55
Power on/o, volume +, volume -, next, mode switching.
USB Type-C
50 × 50mm
NdFeB
20-core double magnetic trumpet
8W × 4
HFPV1.6 HSPV1.2 A2DPV1.2 AVRCPV1.4 DIV1.3
V 4.2 and above
2.4GHz-2.48GHz
Approx. 10 meters
Double channel
8W × 4
5W × 4
100Hz ~ 20KHz
> 80dB（2W）
2200mAh (7.4V）
2~3h
5V, 3A
2.5h
-10~60℃
-10~50℃
9 Specifications
Product Problems and Issues Problems and Issues
Basic information
Horn
Bluetooth specification
Audio specification
Battery specification
Ambient temperature
6
Connection and pairing failure for
multiple times
Low volume or distorted sound
Interrupted music
The speaker indicator is not on
The speaker indicator is not on

12 Trademarks and legal statements11 Precautions
7
Instructions for Product Use
1. To avoid damage caused by falling, do not throw or cast the product
2. Do not disassemble, repair or modify the product. Avoid falling or being under heavy pressure.
3. Do not use or store the product in high temperature. Do not expose the product to rain or humid environment.
Please do not store the product together with flammable, explosive and corrosive chemicals.
4. The product contains lithium battery, please do not put it in fire, so as not to cause danger! When discarding
the product, please abide by local laws and regulations.
5. Do not touch the diaphragms on the left and right sides of the speaker
Instructions for Users
1. In order to avoid hearing damage, please use medium or low volume when playing for a long time.
2. In order to prolong the service life of the battery, please charge it in time after each use. Do not wait until the
battery runs out before recharging. Do not store the speaker for a long time under low battery.
3. When the product cannot be turned on, please connect it to the charger to charge for 10 minutes.
4. Do not clean the product when charging. This product should be powered o before cleaning.
5. To avoid damage to the product, please use the charger with an output voltage/current of 5 V/3 A
Maintenance
1. The normal working temperature of the speaker should be-10 ℃–50 ℃. Temperature extremes will accelerate
the aging of electric components. Pay special attention to cooling and maintaining air circulation in summer.
2. Charge regularly. If the product is not used for a long time, especially in humid and high temperature seasons,
it is best to charge it for half an hour every day. Prevent the internal coil, the speaker voice coil and the
transformer from being damaged by humidity.
3. Regularly wipe the speaker surface with clean, wet and soft cotton cloth; When not in use, cover it with a dust
cover or cloth to prevent dust from entering the speaker.
Ninebot and Ninebot Electric are registered trademarks or trademarks of Ninebot (Beijing) Tech Co., Ltd.;
Ninebot is a registered trademark of Ninebot (Tianjin) Tech Co., Ltd.; Segway and the Rider symbol are
registered trademarks or trademarks of Segway Company. Xiaomi and MIJIA are registered trademarks or
trademarks of Xiaomi Technology Co., Ltd.; Lamborghini is a registered trademark of Automobili Lamborghini
Company; The respective owners reserve the rights of their trademarks referred to in this manual.
We have attempted to include description and instructions for all the functions of the Ninebot Engine Speaker at
the time of printing. However, due to constant improvement of product features and changes of design, your
speaker may dier slightly from the one shown in this document.
In addition to the BT2928 Ninebot Engine Speaker, Ninebot also has a number of series and models with
dierent functions. Some of the features mentioned in this Manual may not be available on your other Ninebot
products. Due to the product update, the products listed in this Manual may dier from the products you
actually purchased in terms of color, appearance, etc. Please refer to the actual products.
2020 Ninebot (Beijing) Tech Co., Ltd. All rights reserved.

13 After-sales Policy
8
The after-sales service for Ninebot Engine Speakers is strictly in accordance with the Law of the People's Republic of
China on Protection of Consumer Rights and Interests and the Product Quality Law of the People's Republic of China.
I. Warranty Policy
In case of any non-human damage or failure of Ninebot Engine Speaker within 7 days of receiving the product,
consumers can choose to return, exchange or repair the products. Returns will be handled with valid purchase vouchers.
(The said return service is only available when the fault product is sold separately, and no separate return service is
provided when it is sold bundled with other products)
In case of any non-human damage or failure of Ninebot Engine Speaker within 15 days of receiving the product,
consumers can choose to return, exchange or repair the products. Note that gifts are not covered by this policy.
Returning for the first 7 days is only applicable to goods sold on Ninebot's ocial e-commerce platform. Artificial
damage and lack of attached spare parts are not covered by the return policy, and the logistics expenses incurred shall
be borne by the consumer.
One of the following two conditions shall be met:
1. The package is not opened, and the packaging and speaker body are in good condition upon receipt of the product.
2. The package has been opened after receipt, the speaker body and all accessories (such as the instruction, data
cables, etc.) are in good condition, the product has no traces of use, and the secondary sales of the product will not be
aected. Please consult customer service (400-607-0001) for specific standards.
The warranty starting time is based on the purchase invoice, the order of Ninebot's ocial e-commerce platform or the
date recorded by Ninebot Company's system in turn (the next day after the signature of the consumer can be regarded
as the warranty starting date by the e-commerce platform).
Tip: It is recommended that you keep the packing boxes for at least 15 days from the day of receiving the product.
See the following table for the warranty period of main body and various components:
II. Non-warranty Policy
1. The validity period of the Three Guarantees has expired
2. Damage caused by human factors
3. Damage caused by force majeure
4. Any damage caused by failure to use, maintain and adjust according to the requirements of the Manual
5. Invoice information does not match the product
6. Failure or damage caused by forced use of this product beyond normal use conditions
7. Dismantling or repairing the product by personnel without authorization of Ninebot Company
8. Malicious damage to the product serial number and product information, including blurring, tearing, tampering, etc.
9. Failure and damage caused by other problems other than the design, manufacture and quality of the product itself
III. Return Policy
Note: If you need to return or exchange the product, please contact the dealer.
If you have any doubts, please visit the ocial website: www.segway.com
Customer service number: 400-607-0001 to 9
Type
Type Type
7 days
15 days
Type Type
Main body
Accessories
Main body of the speaker
Base, data cable
1 year
3 months
Warranty contents Warranty period
Return of
products
Functional or quality
issues stipulated by
national laws
After testing and confirming
by Ninebot Company or
authorized service provider,
and issuing testing report to
confirm that it is a
commodity quality problem.
Type
The warranty starting time is
based on the purchase invoice,
the order of Ninebot's ocial
e-commerce platform or the date
recorded by Ninebot Company's
system in turn
Functional or quality
issues stipulated by
national laws
After testing and confirming
by Ninebot Company or
authorized service provider,
and issuing testing report to
confirm that it is a
commodity quality problem.
The warranty starting time is
based on the purchase invoice,
the order of Ninebot's ocial
e-commerce platform or the date
recorded by Ninebot.
Changing of
products

1. Place the base in a proper
position (as shown above, the
bracket hook is located below)
and wrap the strap around the
vehicle body.
2. Fasten the strap on the strap
hook of the base. Make sure it is
firmly fastened.
3. Press the remaining part of the
strap into the storage slot. 1. Align the holes on the bottom of
the speaker with those in the
base.
2. Press down until you hear a
"clicking" sound.
3. When removing the speaker,
press the disassembly switch
while lifting the speaker
upward.
The manufacturer reserves the right to make changes to the product and update this manual at any time. Product parameters are subject to change without prior notice.
Visit www.segway.com to download the latest user materials
Welcome
Engine Speaker User Manual
Contents
5
1 Product Diagram
2 Installation
3 Connect to a Vehicle (Vehicle Mode)
4 Connect to a Mobile Phone (Music Mode)
5 Charging
6 Button Functions
7. Meanings of Indicators
8 Applicable Models
9. Specifications
10. FAQs
11. Precautions
12. Trademarks and Legal Statements
13. After-sales Policy
1
2
3
4
4
5
5
6
6
7
7
*Please check the packaging contents carefully. In case of any missing or damaged items, please call the after-sales service.
User Manual USB Type-C Charger CableThe Speaker Base
8
1 Product Diagram
Bottom view
2 Installation
Install the Base Install/Remove the Speaker
Base
Horn
Indicator
Power switch
Volume -
Pause/Next
Mode
USB Type-C
Diaphragm on both sides
Bracket hook
Bracket hook
Bracket lock
Bracket lock
Anti-slip strip
Anti-slip strip
Storage slot
Strap
Disassembly switch
Strap hook
Bracket hook
Top view
1 2
5 Charging
3 Connect to a Vehicle (Vehicle Mode) 4 Connect to a Mobile Phone (Music Mode)
NOTE: Please ensure that the vehicle to be connected is turned on and the firmware has been upgraded to the latest version in the Segway-Ninebot App.
10 FAQs6 Button Functions
7 Meanings of Indicators
Short press to power on.
Short press to increase the volume by one bar.
Short press to reduce the volume by one bar.
In vehicle mode, short press to switch sound eects.
Short press to switch vehicle mode and music mode.
Long press to power o.
Self-balancing vehicles
Kickscooter
Electric Motorbike
Ninebot GoKart
Electric Bike
Ninebot S
Ninebot miniPRO
Ninebot S-PLUS
Ninebot Dynamic
Ninebot S-Max
Mi Electric Scooter
Ninebot KickScooter ES1/ES2/ES3/ES4
Ninebot KickScooter 22/E25/E45
Ninebot KickScooter MAX
1. Check whether the speaker is paired or try to restart the speaker
2. Check whether the vehicle is powered on or try restart the vehicle
3. Are there any other applicable vehicles around? If yes, please turn them o.
4. Check whether the Bluetooth of the vehicle is connected
1. Check the volume and adjust to the appropriate value
2. In case of low battery voltage, please charge the battery
1. Is the vehicle out of the eective connection distance of the speaker
2. There is obstacle between the speaker and the vehicle.
1. Is the battery low?
2. Charge the speaker and turn it on
Contact the ocial after-sales service for support.
Product name
Product model
Dimensions (length × width × height)
Net weight
IP rating
Button functions
Charging port
Dimensions
Material
Specifications
Power
Bluetooth protocol
Bluetooth version
Frequency
Working distance
Number of channels
Output power (Max)
Rated power
Frequency range
Signal to noise ratio
Rated capacity
Play time
Charging voltage
Charging time
Storage environment
Operating environment
Ninebot Engine Speaker
BT2928
248 × 83 × 77 mm
715g
IP55
Power on/o, volume +, volume -, next, mode switching.
USB Type-C
50 × 50mm
NdFeB
20-core double magnetic trumpet
8W × 4
HFPV1.6 HSPV1.2 A2DPV1.2 AVRCPV1.4 DIV1.3
V 4.2 and above
2.4GHz-2.48GHz
Approx. 10 meters
Double channel
8W × 4
5W × 4
100Hz ~ 20KHz
> 80dB（2W）
2200mAh (7.4V）
2~3h
5V, 3A
2.5h
-10~60℃
-10~50℃
Ninebot GoKart Kit
Ninebot GoKart Pro
Ninebot Kart Pro (Lamborghini Edition)
Ninebot eMoped C40*
Ninebot eMoped C60*
Ninebot eMoped C80*
Segway Dirt eBike X160
Segway Dirt eBike X260
Ninebot eScooter 80C*
Ninebot eScooter 125*
Ninebot eScooter 100*
Ninebot eScooter 200P*
Segway Dirt eBike X160
Segway Dirt eBike X260
Long press to quickly increase the volume.
Long press to quickly reduce the volume.
In music mode, short press to play/pause.
Long press to pair in vehicle mode.
Long press to disconnect/restore Bluetooth connection in music mode.
8 Applicable models
Power switch
Volume +
Volume-
Next
Mode switch
Vehicle mode
White flashes quickly
White double flashes
White flashes slowly
Solid white indicator
Blue flashes slowly
Solid blue indicator
Red flashes slowly
Solid red
Solid green
Not pairing a vehicle
Vehicle is pairing
Pairing a vehicle but it is not connected successfully.
Connected to the vehicle successfully
Not connected to mobile phone in music mode
Connected to mobile phone in music mode
Low battery
Charging
Fully charged
Music mode
Charging status
12 Trademarks and legal statements 13 After-sales Policy11 Precautions
9 Specifications
Function 1 Function 2 Vehicle Model Product Problems and Issues Problems and Issues
Basic information
Horn
Bluetooth specification
Audio specification
Battery specification
Ambient temperature
Indicator status Meaning
Button
3 4
5 6
7 8
材质工艺:
128g 金东太空梭哑粉纸，封面覆哑膜；
四色印刷+PANTONE 152 C+PANTONE Cool Gray 11C
*Please disable the
"Ninebot AirLock"
feature in the
Segway Ninebot
App, otherwise the
speaker may not be
connected.
Thank you for choosing Ninebot Engine Speaker (hereinafter referred to “the speaker").
This product can be connected to mobile phones to play music, and can also be
connected to many Segway-Ninebot vehicle models. When connected to vehicles, it
can simulate different engine sound effects.
Enjoy these interesting and cool sound effects.
1. Press the power switch to turn on the speaker. The indicator is white by default. If the indicator is blue, please press
the Mode button to switch to the white indicator.
Tip:
After powered on, the speaker has two modes: vehicle mode (white light with engine sound) and music mode (blue
light with chord sound eect).
2. Press and hold the Mode button to start pairing. Please operate the vehicle according to the voice prompt to
complete the pairing. Once the pairing succeeds, the speaker will automatically connect to the vehicle, and the
indicator will be solid white. If the pairing fails, repeat this step.
Note:
· When connecting, please ensure that there is only one active vehicle within the range of the Bluetooth (about 10 m)
and the Bluetooth of the vehicle is not connected, otherwise the connection may not be successful.
· If the vehicle to be connected is Ninebot eScooter or Ninebot eMoped, please disable the "Ninebot AirLock"
function in Segway-Ninebot App, otherwise the speaker may not be connected.
· The speaker automatically connects the paired vehicle. If you need to connect the speaker to another vehicle,
please repeat this step.
3. After the speaker is successfully connected, press "Next" to change the engine sound eect.
Tip:
The speaker has 4 kinds of engine sound eects: single-cylinder engine, double-cylinder engine, V8 engine and V12
engine.
1. Press the power switch to turn on the speaker.
2. Short press the Mode button until the blue indicator is on and the chord sound eect is sounded.
3. Enable the Bluetooth on your mobile phone and connect to "Ninebot Engine Speaker". After pairing, the speaker can
play music from your mobile phone.
When the indicator flashes red, the speaker has low battery, please charge it immediately.
1. Open the rubber cover of the charging port;
2. Insert the charging cable to charge. The indicator is solid red during charging.
3. When the battery is full, the indicator will be solid green. Disconnect the charging cable when finished.
Volume +
The after-sales service for Ninebot Engine Speakers is strictly in accordance with the Law of the People's Republic of
China on Protection of Consumer Rights and Interests and the Product Quality Law of the People's Republic of China.
I. Warranty Policy
In case of any non-human damage or failure of Ninebot Engine Speaker within 7 days of receiving the product,
consumers can choose to return, exchange or repair the products. Returns will be handled with valid purchase vouchers.
(The said return service is only available when the fault product is sold separately, and no separate return service is
provided when it is sold bundled with other products)
In case of any non-human damage or failure of Ninebot Engine Speaker within 15 days of receiving the product,
consumers can choose to return, exchange or repair the products. Note that gifts are not covered by this policy.
Returning for the first 7 days is only applicable to goods sold on Ninebot's ocial e-commerce platform. Artificial
damage and lack of attached spare parts are not covered by the return policy, and the logistics expenses incurred shall
be borne by the consumer.
One of the following two conditions shall be met:
1. The package is not opened, and the packaging and speaker body are in good condition upon receipt of the product.
2. The package has been opened after receipt, the speaker body and all accessories (such as the instruction, data
cables, etc.) are in good condition, the product has no traces of use, and the secondary sales of the product will not be
aected. Please consult customer service (400-607-0001) for specific standards.
The warranty starting time is based on the purchase invoice, the order of Ninebot's ocial e-commerce platform or the
date recorded by Ninebot Company's system in turn (the next day after the signature of the consumer can be regarded
as the warranty starting date by the e-commerce platform).
Tip: It is recommended that you keep the packing boxes for at least 15 days from the day of receiving the product.
See the following table for the warranty period of main body and various components:
II. Non-warranty Policy
1. The validity period of the Three Guarantees has expired
2. Damage caused by human factors
3. Damage caused by force majeure
4. Any damage caused by failure to use, maintain and adjust according to the requirements of the Manual
5. Invoice information does not match the product
6. Failure or damage caused by forced use of this product beyond normal use conditions
7. Dismantling or repairing the product by personnel without authorization of Ninebot Company
8. Malicious damage to the product serial number and product information, including blurring, tearing, tampering, etc.
9. Failure and damage caused by other problems other than the design, manufacture and quality of the product itself
III. Return Policy
Note: If you need to return or exchange the product, please contact the dealer.
If you have any doubts, please visit the ocial website: www.segway.com
Customer service number: 400-607-0001 to 9
This chapter takes Ninebot GoKart Pro as an example. The specific
installation steps depend on the vehicle model.
Please scan the code
to learn about more
compatible models
and how to pair
Connection and pairing failure for
multiple times
Low volume or distorted sound
Interrupted music
The speaker indicator is not on
The speaker indicator is not on
Instructions for Product Use
1. To avoid damage caused by falling, do not throw or cast the product
2. Do not disassemble, repair or modify the product. Avoid falling or being under heavy pressure.
3. Do not use or store the product in high temperature. Do not expose the product to rain or humid environment.
Please do not store the product together with flammable, explosive and corrosive chemicals.
4. The product contains lithium battery, please do not put it in fire, so as not to cause danger! When discarding
the product, please abide by local laws and regulations.
5. Do not touch the diaphragms on the left and right sides of the speaker
Instructions for Users
1. In order to avoid hearing damage, please use medium or low volume when playing for a long time.
2. In order to prolong the service life of the battery, please charge it in time after each use. Do not wait until the
battery runs out before recharging. Do not store the speaker for a long time under low battery.
3. When the product cannot be turned on, please connect it to the charger to charge for 10 minutes.
4. Do not clean the product when charging. This product should be powered o before cleaning.
5. To avoid damage to the product, please use the charger with an output voltage/current of 5 V/3 A
Maintenance
1. The normal working temperature of the speaker should be-10 ℃–50 ℃. Temperature extremes will accelerate
the aging of electric components. Pay special attention to cooling and maintaining air circulation in summer.
2. Charge regularly. If the product is not used for a long time, especially in humid and high temperature seasons,
it is best to charge it for half an hour every day. Prevent the internal coil, the speaker voice coil and the
transformer from being damaged by humidity.
3. Regularly wipe the speaker surface with clean, wet and soft cotton cloth; When not in use, cover it with a dust
cover or cloth to prevent dust from entering the speaker.
Ninebot and Ninebot Electric are registered trademarks or trademarks of Ninebot (Beijing) Tech Co., Ltd.;
Ninebot is a registered trademark of Ninebot (Tianjin) Tech Co., Ltd.; Segway and the Rider symbol are
registered trademarks or trademarks of Segway Company. Xiaomi and MIJIA are registered trademarks or
trademarks of Xiaomi Technology Co., Ltd.; Lamborghini is a registered trademark of Automobili Lamborghini
Company; The respective owners reserve the rights of their trademarks referred to in this manual.
We have attempted to include description and instructions for all the functions of the Ninebot Engine Speaker at
the time of printing. However, due to constant improvement of product features and changes of design, your
speaker may dier slightly from the one shown in this document.
In addition to the BT2928 Ninebot Engine Speaker, Ninebot also has a number of series and models with
dierent functions. Some of the features mentioned in this Manual may not be available on your other Ninebot
products. Due to the product update, the products listed in this Manual may dier from the products you
actually purchased in terms of color, appearance, etc. Please refer to the actual products.
2020 Ninebot (Beijing) Tech Co., Ltd. All rights reserved.
Type
Type Type
7 days
15 days
Type Type
Main body
Accessories
Main body of the speaker
Base, data cable
1 year
3 months
Warranty contents Warranty period
Return of
products
Functional or quality
issues stipulated by
national laws
After testing and confirming
by Ninebot Company or
authorized service provider,
and issuing testing report to
confirm that it is a
commodity quality problem.
Type
The warranty starting time is
based on the purchase invoice,
the order of Ninebot's ocial
e-commerce platform or the date
recorded by Ninebot Company's
system in turn
Functional or quality
issues stipulated by
national laws
After testing and confirming
by Ninebot Company or
authorized service provider,
and issuing testing report to
confirm that it is a
commodity quality problem.
The warranty starting time is
based on the purchase invoice,
the order of Ninebot's ocial
e-commerce platform or the date
recorded by Ninebot.
Changing of
products

FCC STATEMENT :
This device complies with Part 15 of the FCC Rules. Operation is subject to the following
two conditions:
(1) This device may not cause harmful interference, and
(2) This device must accept any interference received, including interference that may
cause undesired operation.
Warning: Changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment.
NOTE: This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This
equipment generates uses and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the
user is encouraged to try to correct the interference by one or more of the following
measures:
Reorient or relocate the receiving an tenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.
FCC Radiation Exposure Statement:
This equipment complies with FCC radiation exposure limits set forth for an
uncontrolled environment. This equipment should be installed and operated
with minimum distance 20cm between the radiator & your body.