Wireless Earbuds
User Manual
Thank you for purchasing our products. This manual addresses
the safety guidelines, warranty and operating instructions.
Please review this manual thoroughly before operating your
device.
SAFETY AND WARRANTY
Important Safety Instructions
Use of earbuds will impair your ability to hear other sounds. Use
caution while using your earbuds when you are engaging in any activity
that requires your full attention.
If you have a pacemaker or other electrical medical devices, you should
consult your physician before using this product.
This package contains small parts that may be hazardous to children
and should be kept out of reach from children. This product is not a toy
– never allow children to play with this product. Always store the
product out of reach from children. The bags themselves or the many
small parts they contain may cause choking if ingested.
Never try to dismantle the product yourself, or push objects of any kind
into the products, as this may cause short circuits which could result in
a fire or electric shock.
None of the components can be replaced or repaired by users. Only
authorized dealers or service centers may open the product. If any
parts of your product require replacement for any reason, including
normal wear and tear or breakage, please contact us.
Avoid exposing your product to rain, moisture or other liquids to
protect against damage to the product or injury to you.
Keep all products, cords, and cables away from operating machinery.
If the product overheats, if the product has been dropped or damaged,
if the product has a damaged cord or plug, or if the product has been
dropped in a liquid, discontinue use and contact us.
Do NOT use in areas where there are explosive hazards.
Do NOT submerge the earbuds in water. Do NOT expose the earbuds to
moving water (e.g., from a faucet, etc.).
Do NOT wear the earbuds while showering or bathing, or when
participating in water sports, e.g., swimming, waterskiing, surfing, etc.
This product contains magnetic material. Consult your physician on
whether this might affect your implantable medical device.
Leaving the product in hot or cold places, such as in a closed car in the
summer and winter conditions, will reduce the capacity and lifetime of
the earbuds.
Dispose of the product according to local standards and regulations.
Remember: Always drive safely, avoid distractions and follow local
laws!
Using the earbuds while operating a motor vehicle, motorcycle,
watercraft or bicycle may be dangerous, and is illegal in some
jurisdictions, just as use of the earbuds with both ears covered while
driving is not permitted in certain jurisdictions. Check your local laws.
Use caution while using your earbuds when you are engaging in any
activity that requires your full attention. While engaging in any such
activity, removing the earbuds from your ear or turning off your
earbuds will keep you from being distracted, so as to avoid accident or
injury. Do not take notes or read documents while driving.
When using and charging this product, basic precautions should always
be followed, including the following:
– Read all the instructions before using the charging case.
– To reduce the risk of injury, close supervision is necessary when the charging case is
used near children.
– Do not expose charging case to water, rain, liquids or snow.
– Use of a power supply or charger that is not recommended or sold by power pack
manufacturer may result in a risk of fire or injury.
– Do not use the charging case in excess of its output range.
– Do not use a charging case that is damaged or modified. Damaged or modified
batteries may exhibit unpredictable behavior resulting in fire, explosion or risk of injury.
– Do not disassemble the charging case. Incorrect reassembly may result in risk of fire
or injury.
– Do not open, crush or expose a charging case to fire or excessive temperature.
Exposure to fire or extreme temperature may cause explosion.
– Have servicing performed by a qualified repair person using only identical
replacement parts.
WARRANTY
We strives to build our products with the highest attention to detail and
craftsmanship. However, sometimes there are occurrences of defect.
We are happy to offer 1-year hassle-free warranty to all our products as we continue
to make amazing wireless product. Please contact us if you have any questions about
our devices.
Package Contents
Wireless earbuds × 1 pair (left and right)
Charging case × 1
Eartips × 3 pairs (large, medium, small)
Micro USB cable × 1
User manual × 1
At a Glance
Microphone
MFB button (multi-function button)
LED indicator
Charging case
LED indicator
Micro USB charging port
L (for the left ear, master earbud)
R (for the right ear)
Replaceable eartips
Earbud LED Indicator Guide
Power on: LED indicators stay blue for a second
Power off: LED indicators stay white for a second
Pairing mode (using both earbuds): LED indicator on the left
earbud flashes blue and white alternately
Pairing mode (using only one earbud): LED indicator on the
earbud flashes blue and white alternately
Connected to a Bluetooth device: LED indicators flash blue
every 7 seconds
Low battery: LED indicators flash white every 5 seconds and a
voice reminder prompts every 2 minutes
Earbuds are being charged: LED indicators stay white
Earbuds are fully charged: LED indicators are off
Charging Case LED Indicator Guide
Earbuds are taken out of or put back into the charging case:
1-25% battery: LED indicator flashes blue once
25%-50% battery: LED indicator flashes blue twice
50%-75% battery: LED indicator flashes blue 3 times
75%-100% battery: LED indicator flashes blue 4 times
Note:
Charging case LED indicator is off when earbuds are being
charged in the charging case.
Charging case is being charged:
1-25% battery: LED indicator flashes blue once every 2 seconds
25%-50% battery: LED indicator flashes blue twice every 2
seconds
50%-75% battery: LED indicator flashes blue 3 times every 2
seconds
75%-100% battery: LED indicator flashes blue 4 times every 2
seconds
Charging case is fully charged: LED indicator stays blue
Wearing the Earbuds
Insert the earbud into your ear and rotate to fit comfortably.
Ensure the microphone is pointing towards your mouth.
Using the Earbuds
Charge the earbuds
When you use the earbuds for the first time, remove the
insulating films on the charging contacts of the earbuds.
1) Align the charging contacts on the right earbud with the
charging pins on the right side of the case.
2) Repeat steps 1 and to charge the left earbud.
3) Close the case when the earbuds LED indicators are solid
white.
Charge the charging case
1) Plug the small end of the USB cable into the Micro USB port
of the charging case.
2) Plug the other end into a USB wall charger or computer (DC
5V) that is powered on.
Notes:
• It takes approx. 2 hours to fully recharge the earbuds.
• The earbuds and the charging case charge simultaneously.
The charging case can be used as a standalone charger.
• When the charging case is out of power and you put the
earbuds back into the case, the earbuds will not turn off
automatically. Turn off the earbuds manually.
• When the earbuds are being charged in the charging case and
the charging case is out of power, the earbuds will turn on
automatically. To avoid unwanted power consumption, turn
off the earbuds manually.
• When the charging case is out of power, the earbuds will not
turn on automatically the time you take them out of the case.
Turn on the earbuds manually.
Power on/off
• Power on
1) The earbuds are automatically on when you take them out
of the charging case.
2) Press and hold the MFB buttons for 2 seconds to turn on.
Note:
When you use the earbuds for the first time, remove the
insulating films on the charging contacts of the earbuds, and
power on the earbuds by pressing and holding the MFB buttons
on both earbuds for 2 seconds.
• Power off
1) The earbuds are off automatically when you put them
back into the charging case.
2) Press and hold the MFB buttons for 4 seconds to turn
them off (when both earbuds are paired with your phone,
press and hold the MFB button on either left or right
earbud, the other earbud will be off at the same time).
Pair
Before pairing the earbuds with your phone or other
Bluetooth devices, make sure that the Bluetooth version of
your phone or other Bluetooth devices are 4.0 or higher.
Pair both earbuds (Pair use)
1) Make sure the earbuds and your phone or other
Bluetooth devices are next to each other (within 3 feet, no
obstacles between).
2) Turn on the Bluetooth of your phone or other Bluetooth
devices.
3) Turn on the earbuds (when they are in shutdown state)
and the earbuds enter pairing mode (LED indicator on the
left earbud flashes blue and white alternately).
4) In the list of found Bluetooth devices in your phone or
other Bluetooth devices, choose “D39-L” to pair.
5) Enter “0000” if your phone or Bluetooth device asks you
to enter a code to pair.
Notes:
• The earbuds will directly enter pairing mode the first time
you turn them on.
• The earbuds will connect to the last paired Bluetooth
device automatically when they are turned on. Please
turn on the Bluetooth of your Bluetooth device before
turning on the earbuds.
• If pairing failed, turn off the earbuds first and then press
and hold the MFB buttons until the indicator on the left
earbud flashes blue and white alternately and earbuds
enter pairing mode. Choose “D39-L” in your phone to pair.
• When both earbuds are connected to your phone, if you
put the right earbud back to the charging case, you can
use the left earbud alone without interruption; but if you
put the left earbud back to the charging case, the right
earbud is also disconnected to your phone and you have
to pair the right earbud with your phone again to use the
right earbud alone.
• When the earbuds are on but not paired with your phone
or other Bluetooth devices, they will exit the pairing mode
and be automatically off in 10 minutes.
Pair ONE earbud (Mono Use)
You can use both earbuds simultaneously or use either of the
two earbuds alone.
1) Make sure the earbud and your phone or other Bluetooth
devices are next to each other (within 3 feet, no obstacles
between)
2) Turn on the Bluetooth of your phone or other Bluetooth
devices.
3) Take the earbud out of the charging case.
4) Turn off the earbud by pressing and holding the MFB
button for 4 seconds.
5) Press and hold the MFB button on the earbud until the
indicator flashes blue and white alternately and earbud
enters pairing mode.
6) In the list of found Bluetooth devices in your phone or
other Bluetooth devices, choose “D39-L” if you use the
left earbud or “D39-R” if you use the right earbud to pair.
Note:
When the left/right earbud is connected to your phone and you
take the other earbud out of the charging case, earbuds will pair
with each other and then link back to your phone automatically
(in the condition that you have paired both earbuds with your
phone before) .
Next song
Press the MFB button on the left or right earbud twice to skip to
the next song.
Play/pause playing songs
Press the MFB button to pause and press the MFB button again
to resume playing songs.
Answer/hang up/reject calls
Press the MFB button or operate on your phone to answer an
incoming call.
Press the MFB button or operate on your phone to hang up
an ongoing call.
Press the MFB button twice to reject an incoming call.
Activate voice control of phone
In paired state, press and hold the MFB button for 2 seconds.
(This function works only when your phone has voice control
function; please refer to the instructions of your phone for
details.)
Trouble Shooting
Q: Pairing failed.
A:
1. Put the earbuds back to the charging case and make sure that
they are off.
2. Take the earbuds out of the case and they are automatically
on.
3. Wait that the indicator on the left earbud flashes blue and
white alternately and earbuds enter pairing mode.
4. Choose “D39-L” in your phone to pair.
If the pairing still fails, check the following points:
• Make sure the earbuds and your Bluetooth device are next to
each other or within 3 feet and there are no obstacles between.
• There are no signal interference nearby (check the question
“Connection is not stable” for signal interference conditions).
• Try to reboot your Bluetooth device.
Q: Earbuds are connected to phone A, but I want to pair
earbuds with phone B when I am not able to disconnect
earbuds from phone A.
1. Turn off the earbuds by pressing and holding the MFB buttons
for 4 seconds.
2. Press and hold the MFB buttons until the indicator on the left
earbud flashes blue and white alternately and earbuds enter
pairing mode.
3. Choose “D39-L” in phone B to pair.
Q: Connection is not stable.
A: Bluetooth signal is transmitted wirelessly and signals can be
affected, which results in intermittent sound of earbuds, in the
following conditions:
• The distance between the earbuds and your Bluetooth device
is at the edge of the Bluetooth pairable distance.
• Transmitted signals encounter obstacles or human body
blockage.
• There are high-power electronic devices nearby.
• There are other Bluetooth devices and are being turned
on/off nearby.
To resume stable connection between the earbuds and your
Bluetooth device, try to avoid the above conditions and do the
pairing again following the steps in “Pairing Failed”.
Q: Power runs out fast.
A: The earbuds playtime varies according to volume level and
audio content. The following conditions may cause fast power
consumption:
• When the charging case is out of power and you put the
earbuds back into the case, the earbuds will not turn off
automatically. To avoid unwanted power consumption, turn
off the earbuds manually.
• When the earbuds are being charged in the charging case and
the charging case is out of power, the earbuds will turn on
automatically. To avoid unwanted power consumption, turn
off the earbuds manually.
Specifications
Model: D39
Bluetooth Standard: V5.0
Operating Range: 33 feet/10 meters (No obstacles between)
Supporting Protocols: A2DP/HFP/HSP/AVRCP
Charging Time: 2 hours (earbuds); 2 hours (charging case)
Talk/Playing Time: about 3 hours (Varies according to volume
level and audio content)
Charging Voltage: DC 5V
Battery Type: Li-polymer
Battery Capacity: 50mAH (earbuds); 480mAH (charging case)