LEXIN LX-A4 User manual

Table of Contents
1.Introduction...................................................................................1
2.Package Contents.......................................................................2-3
3.Installation Instructions............................................................3-4
4.General Operation Instructions..................................................5
-Powering On/Off and Charging
-Pairing LX-A4 with a Bluetooth Device
5.Controls and Functions...........................................................6-9
6.Maintenance and Care................................................................9
7.Certification and Safety Approvals......................................9-10
8.Warranty......................................................................................10
9.Waiver and General Release................................................10-11

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1. Introduction
Thank you for choosing the LX-A4 SAFE CHATTER, Motorcycle 4 Rider 1000M
full-duplex stereo Bluetooth wireless helmet headsets, designed for installation into
most open-face, flip-front and full-face style helmets.
With the LX-A4 SAFE CHATTER, you can call hands-free on your Bluetooth mobile
phone, listen to stereo music or voice instructions of GPS navigations by Bluetooth wirelessly,
and have intercom conversations in full duplex with a passenger or multi-pair up to 4
riders in a small group and talk between any 2 of them in a range of 1000M (3,280
feet) distance.
The new LX-A4 SAFE CHATTER includes a wireless remote control. It is what
LEXIN specially designed for the drivers, who have now the option to full control the
Bluetooth interphone without even taking their hands off the grip.
You can now control your Bluetooth interphone with confidence knowing you’re
pushing the right buttons, including Phone/Hang Off or Play/Pause, Volume + / - &
Intercom Rider A , B , C.
Therefore, riding with your interphone is becoming more convenient & safer.
The LX-A4 SAFE CHATTER is compliant with the Bluetooth Specification v3.0
supporting the following profiles: Headset Profile, Hands-Free Profile (HFP),
Advanced Audio Distribution Profile (A2DP). Please check with the manufacturers of
other devices to determine their compatibility with this headset.
Superior audio fidelity has been achieved with our wide-fidelity, non-ported and
ultra-slim helmet speakers. This headset also provides the industry's best combination
of wind and ambient noise reduction with the miniature boom microphone.
Main unit is powered by a rechargeable Lithium Ion/Polymer power cell providing
8-12 hours of use from a full charge.
Please read this user manual carefully before using the headset.

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How it Works
2. Package Contents

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•LX-A4 SAFE CHATTER Main Unit
•Wireless Remote Control
•Slim 5mm Hi-Fi Stereo Speaker
•Boom Microphone for both full-face and half-face style helmet
• Mounting Bracket & Clamp& 3M Tape
• USB Cable
• 3.5mm Audio Cable
•Spacers
• User Manual
3. Installation Instructions
3.1 Insert the back plate of the clamp between the internal padding and external shell
of the helmet, then attach the front bracket in the proper position on the left bottom
edge of the helmet and tighten the clamp with the supplied screws.
Clip Bracket and 3M Tape Bracket

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Note: If the shell of your helmet is a little thick, you could put the Spacer in the
middle of the clamp. Or you may use the sticker style mounting bracket to hold the
main unit on some special large size helmet or the half helmet.
3.2 Locate an area in the nose section just to the left of center to mount the
microphone. If you are installing into an open face helmet, please adjust the direction
of the microphone so that the triangular mark on the microphone is pointing towards
your mouth.
Boom Microphone for Open Face Helmet and Full Helmet
3.3 Place the speakers into the cheek pads. Push the speakers and microphone firmly
against the Velcro pads.
3.4 Push the wires into the gap between the helmet liner and shell.
3.5 Mount the LX-A4 SAFE CHATTER main unit on the bracket, and slide it into the
L-shape hole.
3.6 Mount the LX-A4 main unit on the bracket.

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4. General Operation Instructions
4A. Powering On/Off and Charging
• Power On
Press & hold the POWER Button for about 6 seconds to power on. The
blue LED turns on.
• Power Off
Just short press the Reset Button one time for quick power off, or press and hold the
POWER Button for about 6 seconds to power off. The blue LED will stop
blinking but keep on, then release the button.
• Charge
Plug the micro USB cable into the USB port.The LED turns on red while charging,
and turns off when the main unit and the remote control is fully charged. It takes
about 2.5 hours to be completely charged. Every time in fully charge the remote
control can use for 3 months.
4B. Pairing the LX-A4 with a Bluetooth Device
Before using the LX-A4 SAFE CHATTER Bluetooth headset with any of Bluetooth
devices for the first time, you need to do the pairing operation. It can be paired with
Bluetooth mobile phones, Bluetooth audio devices such as MP3 or GPS, and with
other LX-A4 SAFE CHATTER Bluetooth headsets. This pairing operation is only
required once for each Bluetooth device, and the headset will remain paired with the
devices and automatically connects to the paired devices again when they are within
range.
• Pairing a Mobile Phone
1. Press & hold the POWER Button for about 8 seconds until the LED
flashes red and blue alternately.
2. Search for Bluetooth devices on your mobile phone. The headset will be listed on
your mobile phone as Motor Phone.
3. Enter 0000 for the PIN.
4. Your mobile phone will confirm that pairing is complete. Then only the blue LED
blinks every 5 seconds.
• Pairing a Stereo Bluetooth Adaptor
1. Turn on audio source and prepare Stereo Bluetooth Adaptor for pairing
2. Put LX-A4 SAFE CHATTER main unit in Bluetooth pairing mode (see above)
3. Turn on or plug in Stereo Bluetooth Adaptor
4. Audio source will automatically start playing though LX-A4 SAFE CHATTER
main unit when pairing is complete
• Pairing Bluetooth GPS Navigation
1. You can listen to Bluetooth voice instructions from a Bluetooth GPS navigation.
2. The paring procedure is the same with the procedure of “Pairing Mobile Phone”.
3. Please refer to the manual of the Bluetooth GPS navigation for details.

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5. Controls and Functions
5.1 Volume and Music Control
5.1 Volume Adjustment
You can easily adjust the volume by short pressing Volume - & Volume + Button.
You will hear a beep when the volume reaches maximum or minimum level.
5.2 Safe Mobile Phone Calls - Incoming and Outgoing
5.2.1 Answer incoming call:
5.2.1. When you have an incoming call, you can wait 3-5 seconds and the headset will
answer the call automatically. Or you can simply short press the Phone/Play Button to
answer the call.
5.2.2 Reject incoming call：
press & hold the Phone/Play Button for 2 seconds.
5.2.3 End active phone call：
short press the Phone/Play Button
5.2.5 Last phone call number redial：
press & hold the Phone/Play Button for 2-3 seconds.
Note: In some cases (e.g. high-power RF radio influence or metal blocking), the
headset might disconnect from the mobile phone. Please short press the Power button
to reconnect.
5.3 Bluetooth Intercom Talk
5.3.1 Pairing with the other LX-A4 headsets for Intercom Conversation
The LX-A4 SAFE CHATTER can be paired with up to three other headsets for a
medium group Bluetooth Intercom conversation.
1) Pairing two LX-A4 headsets to talk
1.Start with power off status, press and hold Power Button on both headsets for 6
seconds until the LED flashes red and blue alternately.
2. Short press the power button on either headset (A or B) and wait until the LEDs of
both headsets turn to blue blinking and intercom connection is automatically
established. (Headset A is paired with Headset B)
3. Press the power button to start or quit the Intercom. Wait three to five seconds for
the units to connect when starting a conversation. When in an Intercom conversation
you can see both blue and red led blinks simultaneously.
2) Paring four LX-A4 headsets to talk
The LX-A4 SAFE CHATTER can be paired with up to three other headsets for a
medium group Bluetooth Intercom conversation.
1. Turn on the two headsets (A and B) that you would like to pair with each other.
2. Press and hold the RIDER B Button of the Headsets A for 6 seconds until the LED
flashes red and blue alternately. Meanwhile, press and hold the RIDER A Button of
the Headsets B for 6 seconds until the LED flashes red and blue alternately.

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3. Short press the RIDER A Button of Headset B or RIDER B Button of the Headsets
A and wait until the LEDs of both headsets turn to blue blinking and intercom
connection is automatically established. (Headset A is paired with Headset B)
4. You can make other pairings between the headset A and C, the headset A and D,
then the headsets B and C, the headsets B and D, then the headset C and D by
following the same procedure as above.
To get the overall pairing details, please refer to the following table:
INTERPHONE
PAIRING
BUTTON
STATUS
BEFORE
PAIRING
WHEN RED AND
BLUE LED FLASH
ON BOTH UNITS,
SHORT PRESS
BELOW BUTTON
ON LEFT
HEADSET
<---pair each
other in 5-9
seconds--->
INTERPHONE
PAIRING
BUTTON
STATUS
BEFORE
PAIRING
Headset A
B
powered on
B
<---pairing--->
Headset B
A
powered on
Headset A
C
powered on
C
<---pairing--->
Headset C
A
powered on
Headset A
A
powered on
A
<---pairing--->
Headset D
A
powered on
Headset B
C
powered on
C
<---pairing--->
Headset C
B
powered on
Headset B
B
powered on
B
<---pairing--->
Headset D
B
powered on
Headset C
C
powered on
C
<---pairing--->
Headset D
C
powered on
5. Four headsets are completely multi-paired as a medium group and switch to talk
between any 2 of them in a range of 1000M (3,280 feet) distance.
5.3.2 Start intercom talk
Short press button Rider A or Rider B or Rider C to start conversation between any 2
riders.
5.3.3 Disconnect the intercom talk
To terminate an intercom conversation between any 2 riders, short press button Rider
A or Rider B or Rider C.
Note: If you have purchased a LX-R6 Dual Pack, the 2 units are pre-paired already,
you can simply press the power button to initiate or quit the intercom talking with the
other.
Note: (There is no Rider D Button on the headset, so for Headsets A, we use Rider A
Button as Rider D Button, and so forth.)
Note: Please make sure that during the pairing procedure, only two headsets are in
power on status, and the other two ones are in power off status.
Important Note: Please make the pairing only by pressing the Button on the main unit,
but not pressing the Buttons on the wireless remote control.

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Important Note: When you are operating the intercom functions by pressing the Rider
A, B, C button on the wireless remote control, please don’t press the same button
repeatedly, otherwise it will confuse the main unit. As the button function of the
wireless remote control is the same as the main unit, you can use it directly without
pairing. Please be patient to wait for the main unit’s reaction for 1-5 seconds,
remember that one operation, one pressing.
Note:
1.When you try to start an intercom conversation with an Intercom rider who is
already having an intercom conversation or a mobile phone call with another person,
you can’t make it and will hear low tone double beep as a busy signal. In this case,
you have to try again later.
2. If your Intercom rider goes out of range while having an intercom conversation,
you may hear static noise and eventually the intercom will be disconnected. In this
case, the LX-A4 SAFE CHATTER automatically tries to reconnect the intercom every
8 seconds and you will hear high tone double beeps until the intercom is reestablished.
If you don’t want to make a re-connection, short press the Rider A or Rider B or Rider
C Button to stop the attempt.
5.4 Stereo Music
You can listen to stereo music in either way: by Bluetooth wireless stereo or with the
enclosed stereo audio cable.
• By Bluetooth Wireless Stereo
The Bluetooth audio device must be paired with the LX-A4 SAFE CHATTER by
following the Bluetooth Audio Device Pairing instructions described in the previous
chapter. The LX-A4 SAFE CHATTER supports the Advanced Audio Distribution
Profile (A2DP), so if your Bluetooth audio device also supports the A2DP, you can
use the LX-A4 SAFE CHATTER to remotely control music playback. You may not
only adjust the volume but also use the functions such as play & pause.
- Press Volume + or Volume – Button on the main unit or on the wireless remote
control to adjust the volume.
- Press Phone/Play Button on the main unit or on the wireless remote control to
play/pause the music.
• By Stereo Audio Cable
Plug your stereo MP3 player directly to the LX-A4 SAFE CHATTER by using the
enclosed 3.5mm audio cable. You may adjust the volume and control the music
playback on the MP3 player.
5.5 Function Priority
The LX-A4 SAFE CHATTER operates in the following order of priority:
1. Mobile phone (highest)
2. Intercom
3. Bluetooth stereo music, FM radio (lowest)
A lower-priority function is always interrupted by a higher-priority function. For
example, stereo music is interrupted by an Intercom call, and Intercom conversation is
interrupted by an incoming mobile phone call.

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5.6 Reset
When the LX-A4 SAFE CHATTER is not working properly or is in faulty status with
any reason, you may reset by pressing the Reset Button on the headset main unit. The
LX-A4 SAFE CHATTER will be switched off and you have to turn on and try to use
again.
6. Maintenance and Care
LX-A4 SAFE CHATTER should be treated with care and the following suggestions will help maintain your
Warranty.
6.1. Do not use or store the device in dusty or dirty environments. Moving parts and electronic components can be
damaged.
6.2. Do not store the device in high heat areas. High temperatures can shorten the life of electronic devices,
damage batteries, and warp or melt certain plastics.
6.3. Do not store the device in cold temperature areas. When the device returns to its normal temperature moisture
can form inside the device and damage electronic circuit boards.
6.4. Do not attempt to open the LX-A4 case.
6.5. Do not drop or knock the device. Rough handling can break internal circuit boards and fine mechanics.
6.6. Do not use harsh chemicals, cleaning solvents, or strong detergents to clean the device.
6.7. Do not paint the device. Paint can clog the moving parts and prevent proper operation.
These suggestions apply equally to the headset main unit, speaker-microphone clamp unit, and power charger.
7. Certification and Safety Approvals
• FCC Compliance Statement
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
- This device may not cause harmful interference;
- This device must accept any interference received, including interference that may cause undesired operation.
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 an 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 antenna.
- 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 RF Exposure Statement
The antenna(s) used for this device must be installed to provide a separation distance of at least 20 cm from all
persons and must not be co-located or operated in conjunction with any other antenna or transmitter.
• FCC Caution
Any changes or modifications to the equipment not expressly approved by the party responsible for compliance
could void user’s authority to operate the equipment.

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• CE Declaration of Conformity
This product is CE marked according to the provisions of the RandTTE Directive (99/5/EC). Hereby, LEXIN
declares that this product is in compliance with the essential requirements and other relevant provisions of
Directive 1999/5/EC.
8. Warranty
LEXIN warrants that this product shall conform to and perform in accordance with published technical
specifications and the accompanying written materials, and shall be free of defects in materials and workmanship,
for a period of one (1) year from the date of purchase by the first consumer purchaser of the Product. The limited
warranty
extends only to the original consumer purchaser of the Product and is not assignable
or transferable to any subsequent purchaser/end-user.
This warranty is limited to the repair and/or replacement, at LEXIN’s discretion, of defective or non-conforming
Product, and LEXIN shall not be responsible for the failure of the Product to perform specified functions, or any
other non- conformance caused by or attributable to: (a) any misapplication or misuse of the Product; (b) failure of
Customer to adhere to any of LEXIN’s specifications or instructions; (c) neglect of, abuse of, or accident to, the
Product; or (d) any associated or complementary equipment or software not furnished by LEXIN.
Limited warranty service may be obtained by delivering the Product to LEXIN or to the international distributor it
was purchased through and providing proof of purchase or receipt date. Customer agrees to insure the Product or
assume the risk of loss or damage in transit, to prepay shipping charges to LEXIN, and to use the original shipping
container or equivalent
9.Waiver and General Release
By using the Product, you will waive substantial legal rights including the right to use. Please read the following
carefully before using the device. By using the Product, you
agree to be bound to this agreement and forfeit the right to sue.
By using the Product, you are irrevocably releasing, indemnifying from any liability, loss, claim and expense
(including attorney’s fees) and holding LEXIN harmless for any bodily injuries, harm or death as well as losses or
damages in goods, to any vehicles including your own, or to any property or asset that belong to you or to third
parties, any of which may result from using the Product under any circumstances or conditions and irrespective of
jurisdiction.
9.1. You, your heirs, legal representatives, successors or assigns, hereby voluntarily and forever release, discharge,
indemnify and hold harmless LEXIN from any and all litigation, claims, debts, demands, actions and liability
which may arise, directly or indirectly, from using the Product for any distress, pain, suffering, discomfort, loss,
injury, death, damages to or in respect to any person or property however caused, WHETHER ARISING FROM
THE NEGLIGENCE OR OTHERWISE, and which may hereafter accrue to you on some future date as a result of
said use, to the fullest extent permitted by law.
9.2. You fully understand and assume the risks in using the Product, including risk of negligent acts or omissions
by others. All risks for operating the Product are assumed solely by the user of the Product.
9.3. You confirm that you are physically capable to use the Product and that you have no medical conditions or
needs that may infringe upon your abilities to do so in a safe manner. You confirm that you are at least eighteen
(18) years of age and that you have been advised of the risks associated with the use of the Product. You further
confirm that you will not consume any alcohol that may affect your alertness or any
mind-altering substance, and will not carry, use or consume these substances before or during the use of the
Product.

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9.4. You fully acknowledge our warnings and understand that:
(a) Risks and dangers exist in using the Product while in traffic, including but not limited to injury or illness,
strains, fractures, partial and/or total paralysis, death or other ailments that could cause serious disability;
(b) These risks and dangers may be caused by the negligence of the manufacturers or its agents or any third party
involved in designing or manufacturing the Product;
(c) These risks and dangers may arise from foreseeable or unforeseeable causes.
You hereby assume all risks and dangers and all responsibility for any losses and/ or damages, whether caused in
whole or in part by the negligence or other conduct of others, including LEXIN.
9.5. By using the Product, you confirm that you have read this release of liability and fully understand and accept
its terms and conditions.
WARNING
PLEASE CHECK ALL LOCAL LAWS AND REGULATIONS
REGARDING THE USE OF IN-HELMET SPEAKERS WHILE
OPERATING MOTORIZED VEHICLES.

WWW.LEXINMOTORCYCLE.COM
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