New Original T75 Wireless Bluetooth 5.3 Headphones Sports …, Bukit Batok

1. The earphone side is not functioning.
1. Preliminary inspection
Ensure the headphones are turned on. Place both earphones back into the charging case and check that the charging indicator light is on (make sure there is a good connection).
2. Re-pair the earphones
Step 1: Reset the earphones
Put both earphones in the charging case and leave the lid open. Press and hold the button on the back of the charging case for 10-15 seconds (some models may require more time) until the indicator light flashes rapidly (flashing red and white).
1. How to restore factory settings
Long press the power button/function button. For most headphones, while powered off, hold down the power button (or a specific combination of buttons, such as the volume button) for 10-30 seconds until the indicator light flashes quickly or you hear a prompt sound, indicating a successful reset.
1. How to charge and power on headphones
Check the charging interface. Most headphones use a USB-C port (some older models may have a Micro USB port). Insert the original or compatible charging cable into the headphone charging port and connect the other end to a 5V/1A~2A adapter or a computer USB port. The headphone indicator light will remain on or flash during charging (typically, red indicates charging, while green indicates a full charge).
Charging time
Typically takes 1-3 hours; please refer to the user manual for detailed information.
Cautions
Avoid overcharging (disconnect immediately after fully charged). It is recommended to fully charge the device before the first use.