QCY H3 - Headset Functions; MFB and Volume Controls; ANC Mode Switching

MFB
Volume +/-
3.5mm AUX
Audio Port
Power-on: Hold MFB for 2s
Power-off: Hold MFB for 4s
Answer/end call: Press MFB
Ignore call: Hold MFB for 1.5s
Skip track backward: Hold Volume- for 1s
Skip track forward: Hold Volume+ for 1s
Volume up: Press Volume+
Volume down: Press Volume-
Voice assistant: Triple press MFB
Playback/pause: Press MFB
Gaming mode: Double press MFB
Functions
In ANC ON, doubel press ANC Button to turn on/off ANC Adaptive.
Switch mode: Press ANC Button to switch among ANC ON,
ANC OFF and Transparency.
ANC Button