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Specifications
BT chip	AB5376	Charging voltage	5V
BT protocol	HFP 1.7, HSP 1.2, A2DP 1.3, AVRCP 1.6, SPP 1.2 and PBAP 1.0	Working voltage	3.15-4.2V
Transmitting power	Class 2 (-6dbm-+2dbm)	Open distance	10M
Working frequency band	2.4G ISM band (2.402-2.480GHZ)	Music time	4H
Standby time	120H	Charging time of charging box about	1.5H
Headphone battery	3.7V 40mA/H	3.7V 500mA/H	3.7V 500mA/H
Speaker parameters
ohm number	16±15%Ω	Sensitivity	108+/-3DB
Frequency range	20-20KHZ	Speaker outer diameter	φ6mm×H4.5mm
Rated output power	2mW	Maximum output power	5mW
Microphone parameters
size	silicon wheat 2718	Sensitivity	-42+/-3db
Touch function table(the left ear is the main ear)
Turn on	hold for 3 seconds	Shut down	hold for 5 seconds
Answer the call	Single Click	Hang up the phone	Single Click
Next song	Double-click the right ear	Previous song	Double-click the left ear
Volume +	Triple-click on the left ear right ear	Volume –	Triple-click on the left ear
Voice Assistant (SIRI)	Long press for 3 seconds and let go	Reject the call	double-click the button