WIRELESS EARBUDS WITH CHARGING CASE
QDSLTMC12B
INSTRUCTION MANUAL
IMPORTANT: Please read all instructions carefully before use and keep for future reference
Product Overview
Description of components:
- Charging Case: Features a charging case opening switch, a check battery button, and four power indicator lights on the back. It has a Micro USB port for charging.
- Earbuds: Each earbud has an indicator light, a microphone, and a multi-function button. They are labeled "Left ear" and "Right ear".
Pairing the Earbuds
(Initial setup and connection with Bluetooth device)
NOTE: Initially each earbud must be connected to the mobile device individually.
- Take out one of the earbuds from the charging case, press and hold the multi-function button until indicator flashes red & blue simultaneously to enter pairing mode.
- Turn on Bluetooth function on mobile device. Then select "QDSLTMC12B" from the device available list to pair.
- Once pairing is successful, indicator will flash in blue on the side of earbud. Bluetooth status on mobile screen will also display "Connected" under the name "QDSLTMC12B".
- Take out the other earbud from the charging case, press and hold the multi-function button on this earbud until indicator flashes in blue & red to enter pairing mode. Select "QDSLTMC12B" in the Bluetooth pairing menu to connect this earbud to device. The indicator will flash in blue with a beep tone once the pairing is completed.
- Now both earbuds are ready to be used as a stereo pair of earbuds. Note: Music volume is controlled by mobile device.
- To turn off the earbuds, press and hold the multi-function button on either earbud until indicator light flashes in red with "disconnected" voice prompt. Both earbuds will turn off together. Alternately, put both earbuds back into the charging case.
Using with Previously Connected Bluetooth Device
- Turn on Bluetooth function on mobile device. Select "QDSLTMC12B" from the device available list to pair.
- Take out either side earbud. Press and hold multi-function button of earbud until indicator flashes blue. Then repeat the step on the other side earbud. Bluetooth status on mobile screen will display "Connected" under the name "QDSLTMC12B" once pairing process is successful.
- Now both earbuds are ready to be used. Music volume will be controlled by the mobile device.
Using Individual Earbuds
- Take out either side earbud from the charging case. Press and hold the multi-function button until indicator flashes blue.
- Turn on your mobile devices Bluetooth function and search for the name "QDSLTMC12B" and connect it. Bluetooth status on mobile screen will also display "Connected" under the name "QDSLTMC12B".
Using the Left Earbud for Handsfree Phone Calls
- The left earbud can be used to answer an incoming phone call as handsfree when it is connected to a mobile phone. (NOTE: Only left side earbud will work for phone calls).
- An incoming call beep tone will go off when a phone call comes in. Short press multi-function button to answer the incoming call through the left side earbud and press it again to end the call.
Music Playing Function
- While music is playing, press multi-function button once to pause music, and press it once again to start playing again.
- Press multi-function button twice to skip to the next music track during music playback.
- Adjust the volume of music through volume control keys on the phone.
Charging Operation
Initial Use of the Earbuds
- With the earbuds placed inside the charging case, connect the charging cable (included) to the charging port on the back of the charging case and the other end of the charging cable to a workable USB power source.
- The unit will be ready to be used once all four power indicator lights on the back of the charging case are solid blue. (Approximately 2.5 hours).
Recharging Earbuds/Charging Case
- Place the earbuds inside of the charging case. The indicators on earbuds will light up in red when charging process is initiated.
- Red indicator light on the earbuds will be "on" during the charging process and will turn blue then turn off once both earbuds are fully charged. (Approximately 1 hour). Charging time may vary based on the battery level of the charging case.
- To check battery level of charging case: Press "check battery button" inside the charging case to review battery status indicators on the back of the charging case.
- Recharge the charging case by connecting the USB charging cable (included) to the charging port on the back of the charging case and the other end to a USB power source. (Approximately 2.5 hours).
Functions
| Function | Operation Method |
|---|---|
| Enter pairing mode | Press and hold multi-function button until indicator light flashes blue and red or you hear the voice prompt "pairing". |
| Turn on the earbuds | Press and hold multi-function button until indicator light flashes blue. |
| Turn off the earbuds | Press and hold multi-function button until indicator light flashes red. You may also hear a "disconnected" voice prompt. |
| Play/pause music | When playing music, press the multi-function button on either side of earbud to pause the music, and press it again to play. |
| Change song | When playing music, press multi-function button twice on either earbud to skip to the next music track. |
| Answer call | Press multi-function button once to answer incoming call. |
| Hang up call | Press multi-function button once to hang up the call. |
Troubleshooting
| Issue | Possible Cause | Solution |
|---|---|---|
| Earbuds are not charging | Battery level in charge case is low Earbud charge points do not connect with charge points in charging case |
Connect the charging case with the included USB charging cable to a USB power source Take out both earbuds and reposition them in the charging case (Red indicator light should appear on the earbuds when charging is initiated) |
| Earbuds cannot be paired with the mobile device | The pairing steps were missed Previous connected devices have not yet disconnected from the earbuds Battery level is low in earbuds |
Turn off both earbuds by pressing and holding multi-function buttons on both earbuds and go through the pairing steps again. Check the Bluetooth setting on the previous connected device to either turn off the Bluetooth function or remove "QDSLTMC12B" from the list of device. Put both earbuds into the charging case to recharge (check the battery level in the charging case and connect to external USB power source if necessary). |
| Audio from earbuds is lagging or one side dropped out | Signal interference from surrounding environment such as cellular signal tower and WIFI broadcast antenna | Leave the premises to reduce the interference. Turn off both earbuds and remove the from the Bluetooth device list on your mobile device. Re-initiate the pairing process. |
| Charging case cannot be recharged | A loose connection on USB charging cable in between charging case and USB power source USB power source is not working |
Check both connections of the USB charging cable. Check status of the USB power source. |
| Earbuds come loose when wearing or are uncomfortable to wear | Current ear plug and/or ear hook is not correct size for comfort | Swap the ear plugs and/or hook to a different size. Package includes small, medium and large size ear plugs and ear hooks. |
| Audio conversation could not be heard during handsfree operation | Handsfree earbud (left side) is not in use. | Connect left side earbud to the mobile phone. |
Production Specification
- Model: QDSLTMC12B
- Bluetooth controller: CSR64110 V4.2 version
- Support A2DP decoding
- Operating distance: Up to 10 metres (distance may vary due to external electronic interference and obstacle)
- Working frequency: 2.402GHz ~ 2.480GHz
- Transmit power: CLASS 2, MAX 4dbm
- Audio decoding mode: SBC
- Input voltage: DC5±0.25V/1.0A
- Battery capacity (Earbuds): 3.7V/50mAh per side
- Battery capacity (Charging Case): 3.7V/400mAh
- Operating voltage: 3.7V (3.3-4.2V)
- Charging time (Earbuds): ≤1H
- Speaker specification: 32Ω±15%
- Play time for continuous music: ≤4H
- Talking time: ≤4H
- Standby connection time: ≤100H
- Operating current: ≤25mA
- Matching name: QDSLTMC12Bv
- Matching password: 0000 (Android version 2.1 and below)
Package Contents
- Bluetooth Earbuds x 1 pair
- Charge Case x 1
- USB Charging Cable x 1
- Earbud Adaptor x 3 pair (Size: S, M, L)
- Ear Hook x 3 pair (Size: S, M, L)
- Instruction Manual x 1
