Quartet-Extra Product Overview - Buttons & Indicators – Avantree Support

Headphone Overview & Function Table

   ① Power / PAIRING Switch   ⑤ EQ Button
  ② Play/Pause/Call Button   ⑥ AUX Input Port
   ③ Volume Up Button   ⑦ Charging Port
  ④ Volume Down Button      ⑧ LED Indicator

Headphone Function Table

Function	From Status	Action	LED Indicator	Voice Prompt
Power On	OFF	Slide the Power Switch ① to ON	/	/
Power Off	ON	Slide the Power Switch ① to OFF	/	/
Enter Pairing Mode	ON	Slide and hold the Power Switch ① to PAIR for 2S	⑧ Flashing Blue Rapidly	/
Adjust Volume	Streaming Audio	Click the Volume Button ③ or ④ to adjust	/	/
Mute the Headphone Speaker	Streaming Audio	Press Button ② once to mute / unmute headphone speakers	/	/
Adjust EQ	Connected	Click EQ Button ⑤ to switch EQ modes	/	"Balanced Mode" or "Clear Voice"

3. LED Indicator Table

Headphone Indicator ⑧	Flashing Blue Rapidly	Pairing Mode
	Solid Blue	Connected
	Flashing Red	Low Battery
	Solid Red	Charging
	Red LED off	Charging completed