厂家单声道蓝牙耳机BH08R

Bluetooth Standard		Bluetooth 2.1+EDR
Chipset		CSR BC57F687A05
Speaker		32±15% ohm, Normal 0.005W,Maximum 0.01W,
Microphone		Two Omnidirectional, -42±3dB
Charging interface		MICROUSB Type Port
Button		MFB,
RF Specification	Frequency band	2.4GISM band
	Frequency range	2.402-2.480GHZ
	Spectrum	FHSS
	Modulation	GFSK，π/4 DQPSK，8DPSK
	Antenna	PCB antenna

	Min	Typ	Max	Unit
Power consumption
Charging input voltage range	4.7	5	6	V
Charger input current requirements	200			mA
Ripple And Noise (Charger input)			200	mV p-p
Battery Charging Saturation voltage	4.15		4.25	V
Batterycapacity		90		mAH
Low-voltage warning	3.3	3.4	3.5	V
Low-voltage automatic shutdown	2.9	3.1	3.2	V
Talk Current(HV3 connection,Dc=3.7V)		20	22	mA
Standby current(ACL connection sniff mode, Dc=3.7V)		500	1000	uA
leakage current(Power off mode, DC=3.7V)			1	uA
Talk time	4			H
Standby time			100	H
Audio Characteristics
Speaker Output frequency range	20		4000	HZ
Output Sound Pressure Level()(1Khz at 1cm)	102	105	108	dB
Distortion and noise (relative to full scale )(32ohm Speaker)	-72	-75		dB
Microphone input frequency range	20		4000	HZ
Distortion and noise at 1Khz(Microphone)	-75	-78		dB
RF Characteristics
FrequencyRange	2.402		2.480	GHZ
Transmitter power	0		4	dBm