Original GENAI Blue3 Wireless Bluetooth V4.0 Universal Stereo Earphone
Tax included.
Operation guide as followed:
1. Power on/off: long press the MFB
2. Answer a call: press the MFB once while a coming call
Reject a call: press the MFB once while calling
Redial: press the MFB twice
3. Adjust volume: "+", press once, "-", press once.
Change song: "+", press for 3s to previous song; "-", press for 3s to next song.
4. Indicator light: