Key operation function:
Power on: Press and hold the function button for 3s, or automatically power on when it is removed from the battery box.
Pairing: Turn on the phone's Bluetooth, search for "BTMV09" and click on pairing.
Shutdown: Press and hold the function button for 5s, or put it in the battery box and automatically shut down.
Call mode: When a call comes in, short press once-answer the call; long press for 2s-hang up; during a call, short press once-hang up.
Music switching: When playing music, short press 3 times continuously to switch music tracks.
Volume control: Short press twice to adjust the volume.
Please refer to the instruction manual for specific usage method.

100% brand new and high quality
Name: Wireless Bluetooth Headset
Bluetooth version: 5.0
Charging box battery capacity: 300mAh
Charging port: Micro USB

Notes:
The color may be slightly different due to the influence of light and monitor settings.
Manual measurement, there is an error of 2-3 cm, please understand.