Monoprice 43252 User manual

Bluetooth® Headphones with aptX™ Low Latency
P/N 43252
User's Manual

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SAFETY WARNINGS AND GUIDELINES
Please read this entire manual before using this device, paying extra attention to these
safety warnings and guidelines. Please keep this manual in a safe place for future reference.
•This device is intended for indoor use only.
•Do not expose this device to water or moisture of any kind.
•Do not expose this device to excessive vibration, extreme force, shock, or
fluctuations in temperature or humidity.
•Do not use this device while operating a motor vehicle, heavy equipment, walking
in traffic, or any other situation in which situational awareness is a key to safety.
•Avoid prolonged exposure to excessive volume levels, which could cause hearing
damage. Reduce the volume to minimum before wearing these headphones, then
increase the volume to a comfortable listening level.
•Do not expose this device to excessively high temperatures. Do not place it in, on,
or near a heat source, such as a fireplace, stove, radiator, etc. Do not leave it in
direct sunlight.
•This device contains a Lithium-ion battery. Dispose of this device only in accordance
with local, state, or federal regulations for electronic waste.
•Charge the battery before first use and at least once every three months to keep it
fresh and capable of holding the full charge.
•Clean using a soft, dry cloth only. Do not use chemical cleaners, solvents, or
detergents. For stubborn deposits, moisten the cloth with warm water.
•This device has no user serviceable parts. Do not attempt to open, service, or
modify this device.

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CUSTOMER SERVICE
The Monoprice Customer Service department is dedicated to ensuring that your ordering,
purchasing, and delivery experience is second to none. If you have any problem with your
order, please give us an opportunity to make it right. You can contact a Monoprice
Customer Service representative through the Live Chat link on our website
www.monoprice.com or via email at su[email protected]. Check the website for
support times and links.
PACKAGE CONTENTS
Please take an inventory of the package contents to ensure you have all the items listed
below. If anything is missing or damaged, please contact Monoprice Customer Service for a
replacement.
1x Bluetooth® Headphones
1x Micro USB Charging Cable
1x 3.5mm Audio Cable
1x User's Manual

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PRODUCT OVERVIEW
1. 3.5mm Audio Jack
2. Multifunction Button (MFB)
3. Volume +
4. Volume -
5. LED Indicator
6. Micro USB Charging Port
7. Microphone
8. Power Switch

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BUTTON OPERATION
Button
Function
Description
Power Switch
Power on
With power off, slide the switch to the ON position.
If not already paired or if paired and the paired device
is off or out of range, the headphones will
automatically enter Bluetooth® pairing mode. The
Bluetooth LED Indicator will flash red and blue
alternately, indicating that it is in Bluetooth pairing
mode.
If already paired and the paired device is on and
within range, the headphones will reconnect to the
device.
Power off
With power on, slide the switch to the OFF position.
MFB
Play/pause
Momentarily press to pause or resume audio
playback.
Redial last
phone call
Double press to redial the last phone number called.
Voice dialing
Press and hold for 1 second to enable voice dialing.
Answer a call
When an incoming phone call is received,
momentarily press to answer the call.
Hang up a call
While a call is in progress, momentarily press to
terminate the call.
Reject a call
When an incoming call is received, press and hold for
1 second to reject the call.
Microphone
mute
While a call is in progress, double press to
mute/unmute the microphone.

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Volume +
Volume
increase
Momentarily press to increase the volume level.
Next track
Press and hold for 1 second to skip forward to the
next track.
Volume -
Volume
decrease
Momentarily press to decrease the volume level.
Previous track
Press and hold for 1 second to skip back to the
previous track.
MFB,
Volume +, and
Volume -
simultaneously
Delete pairing
record
Press and hold for 5 seconds to delete the pairing
record.
LED INDICATIONS
Status
LED Indication
Power on
Flashes blue twice
Power off
Off
Bluetooth® pairing mode
Flashes red and blue alternately
Connected standby mode / audio playback
/ call in progress
Flashes blue once every 10 seconds
Delete pairing record
Flashes red and blue once at the same time
Low battery
Flashes red
Charging
Solid red
Charging Complete
Solid blue

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CHARGING
The internal battery should be charged before first use and at least once every two months
to keep the battery fresh and capable of holding a full charge.
1. With the headphones powered on, slide the Power Switch to the OFF position.
2. Plug one end of the included Micro USB Charging Cable into the Micro USB
Charging Port on the headphones, then plug the other end into a USB power
source, such as a wall charger, power bank, computer, etc. (available separately).
The LED Indicator illuminates solid red, indicating that charging is in progress.
3. When charging is complete, the LED Indicator illuminates solid blue.
Note that if the headphones are powered on when charging begins, they will power off
automatically.
BLUETOOTH PAIRING
1. With the Headphones powered off, slide the Power Switch to the ON position. If
the headphones are not already paired with a mobile device or if the paired device
is off or out of range, the headphones will automatically enter Bluetooth® pairing
mode. The LED Indicator will flash red and blue alternately, indicating that the
headphones are in Bluetooth pairing mode.
Note: If already paired to a mobile device and that device is powered on and within
range, the headphones will automatically reconnect with that mobile device,
instead of entering Bluetooth pairing mode. If you want to pair a different mobile
device, press and hold the MFB, Volume -, and Volume + buttons at the same time
for 5 seconds to delete the pairing record.
2. Ensure that your mobile device is within 3 feet of the headphones. Open the
Bluetooth® settings on your device and scan for nearby Bluetooth connections.
3. Locate and select the MP43252 entry. If prompted for a passcode, enter 0000 (four
zeros). Once connected, the LED Indicator will flash blue once every 10 seconds.

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4. If your mobile device supports the AVRCP Bluetooth profile, you can use the
controls on the headphones to answer calls, adjust volume, play/pause playback,
and skip tracks.
MULTIPOINT PAIRING
You can pair a second device for streaming audio to the headphones.
1. Follow the instructions in the BLUETOOTH PAIRING section to pair your first device.
2. Open the Bluetooth® settings on your first device and disable Bluetooth.
3. With the headphones powered off, slide the Power Switch to the ON position. The
LED Indicator will flash red and blue alternately, indicating that they are in
Bluetooth pairing mode.
4. Open the Bluetooth® settings on your second device, then scan for nearby
Bluetooth connections.
5. Locate and select the MP43252 entry. If prompted for a passcode, enter 0000 (four
zeros). Once connected, the LED Indicator will flash blue once every 10 seconds.
6. If your second mobile device supports the AVRCP Bluetooth profile, you can use the
controls on the headphones to answer calls, adjust volume, play/pause playback,
and skip tracks.
7. Open the Bluetooth settings on your first device and turn Bluetooth on. The first
device should connect with the headphones.
Note that you can stream audio from only one connected device at a time. If you want to
stream from the second device, you must stop playback on the first device.
Note that the selected audio codec is determined by the codecs supported on the two
devices. The priority order is aptX™ Low Latency, aptX™, AAC, and SBC. If the two devices
do not support the same codecs, the SBC codec will be selected.

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WIRED CONNECTION
If your audio device does not have Bluetooth® or if you prefer to not use Bluetooth, you
can plug the headphones directly into the audio output of your device.
1. Plug one end of the included 3.5mm Audio Cable into the 3.5mm Audio Jack on the
headphones, then plug the other end into the headphones jack on your phone or
another 3.5mm audio source.
2. Use the audio playback controls on your connected device to control playback. The
controls on the headphones do not function without a Bluetooth connection.
TECHNICAL SUPPORT
Monoprice is pleased to provide free, live, online technical support to assist you with any
questions you may have about installation, setup, troubleshooting, or product
recommendations. If you ever need assistance with your new product, please come online
to talk to one of our friendly and knowledgeable Tech Support Associates. Technical
support is available through the online chat button on our website www.monoprice.com
or through email by sending a message to [e-mail]. Check the website for
support times and links.
To download the latest drivers, firmware, manuals, etc., go to www.monoprice.com and
type the P/N into the search bar. If available, support files are linked at the bottom of the
product page.

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SPECIFICATIONS
Model
43252
Bluetooth® Version
4.2
Bluetooth Chipset
Qualcomm® CSRA64215
Bluetooth Range
Up to 32 feet (10 meters)
Supported Bluetooth Profiles
HSP, HFP, AVRCP, A2DP
Bluetooth Pairing Name
MP43252
Supported Audio Codecs
aptX™ Low Latency, aptX™, SBC
Battery Type
3.7V Lithium-ion
Battery Capacity
400mAh
Charging Time
About 2 hours
Standby Time
About 400 hours
Playback/Talk Time
About 24 hours (50% volume)
Dimensions
8.3" x 6.1" x 3.3" (210 x 155 x 83 mm)
Weight
9.5 oz. (269 g)
REGULATORY COMPLIANCE
Notice for FCC
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.

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Modifying the equipment without Monoprice's authorization may result in the equipment
no longer complying with FCC requirements for Class B digital devices. In that event, your
right to use the equipment may be limited by FCC regulations, and you may be required to
correct any interference to radio or television communications at your own expense.
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 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.
Radio Notice for FCC
Caution
This FCC Part 15 radio device operates on a non-interference basis with other devices
operating at this frequency. Any changes or modification to said product not expressly
approved by Monoprice, including the use of non-approved antennas, could void the user's
authority to operate this device.
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.

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Monoprice™ and all Monoprice logos are trademarks of Monoprice Inc.
The Bluetooth® word mark and logos are registered trademarks of Bluetooth SIG, Inc.
Qualcomm® is a trademark of Qualcomm Incorporated, registered in the United States and
other countries. aptX™, aptX™ Low Latency Audio, and the aptX™ logos are trademarks of
Qualcomm Technologies International, Ltd. Qualcomm® aptX™ and Qualcomm® aptX™ Low
Latency Audio are products of Qualcomm Technologies International, Ltd.