Langsdom GT4 TWS Dual Driver Earphone User Manual
- June 6, 2024
- Langsdom
Table of Contents
Langsdom GT4 TWS Dual Driver Earphone
**User Manual**
We appreciate you for purchasing the Langsdom GT4 TWS Dual Driver Earphone, the following instructions will guide you to use it easily
Wearing
Put the earphone in your ears, rotate and adjust it to the best angle, Be sure to wear comfortably and secure fit.
Accessories
Diagram
Earphone：
① Smart touch
② Transparent cavity
Charging box：
③ LED indicator
④ Charging port
Auto On/ Off
- When open the box, the earphone will automatically power on.
- When putted in and close the box, the earphone will automatically power off.
Manually On/Off
- Long press the earphone touch areas about 5s to power on the earphone.
- Long press the earphone touch areas about 5s to power off the earphone.
Pairing
How to Pair
- Taking the earphone out of the charging box, the left and right earphone will automatically connect and enter the Bluetooth search pairing state, select and connect “GT4”devices in the Bluetooth list of smart devices
Auto pairing
- Taking it out of charging box, the earphone will automatically connect back to the last Bluetooth device.
- When the earphone is disconnected from the device beyond the effective distance, they will automatically reconnect after returning to the effective distance within 1 minute.
Touch Control
Left：
Play/Pause x1
Volume down x2
Long press 2s~3s: Previous song
Enter/Exit game mode x3
Right：
Answer/Hang up x1
Volume up/Reject x2
Long press 2s~3s: Next song
Voice assistant(Siri) x3
Note : The operation of the play/pause function and the call mode can be completed by pressing the left and right ears, and the short press operation requires within 1.5s.
Charging
Charging the box：
Charging the earphone：
Warning
- Do not listen for a long time at high volume to prevent injury to hearing.
- Do not wear earphone while driving, cycling or walking, otherwise it will easily cause traffic accidents.
- The earphone only can be charged with 5V charger, using a fast charger that more than 5V or charger with 5V more than 1.5A which will cause overheat or fire.
- Please fully charge before long-term placement, and ensure that it is charged every 3 months.
※ It is recommend that new machine be fully charged before use.
Service
- If any problems, please contact with the related stores, our customer service team will answer your questions about the product using and other after-sales issues.
- Warranty is only covered by the first year of purchase. The intentional damage from users is not included.
- Please contact us with your order number and earphone’s photos by e-mail, because it is helpful for us to solve the problems faster, providing you a better product experience.
Product Parameters
Model: GT4
BT Version: V5.0
Input Voltage: DC5V
Capacity Battery: 40*2mAh/500mAh
BT Frequency Range: 2.402-2.480GHz
Audio Frequency: 20Hz-20KHz
Drivers Size: Φ8mm
Transmission Range: 10m
Sensitivity: 100dB±3dB
Play Time: About 5 hours
Charging Time: About 1.5 hours
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.
Any 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 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.
The device has been evaluated to meet general RF exposure requirement. The
device can be used in portable exposure condition without restriction
Thanks for choosing langsdom product
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>