Basic operation
Adjust the volume
LED indicator and voice prompts
Instruction
Power on
Power off
Pairing
Standby
Incoming call
Battery low
LED status
Flashes blue twice
Flashes red once
Flashes red and blue alternately
Flashes blue once every 8 seconds
Flashes blue continuously
Flashes red twice every 2 seconds
Voice prompts
Beep
Tone from high to low
/
Continuous tone
Warning tone
Charging
Flashes red while charging
Flashes blue once fully charged
/
Tone from low to high
Press the "+" or "-" button to turn volume up or down, you hear
beep voice prompts once reach the maximum or minimum.