Product Description

Specifications:
Bluetooth Version: V4.0
Modulation method: GFSK, π / 4 DQPSK, 8 DPSK
The power supply voltage: 3.3 - 4.2 V
Support BT protocol:HFP v1.6 HSP V1.2,A2DP V1.6,AVRCP V1.4 DI V1.3
The working current: ≤*0 mA
Standby current: < *0 uA
Temperature range: - *0 ℃ to + *0 ℃
Wireless transmission range: > *0 meters
Transmission power: support CLASS1 CLASS2 / adjustable CLASS3 maximum 8 DBM
Sensitivity: - *0dBm < 0.1% BER
Frequency range: 2.4 GHz to 2.**0GHz
External interface: PIO, SPI, Audio in/out and PCM, USB
Audio performance: support for AAC, MP3, SBC, stereo
Audio signal to noise ratio: ≥*5 dB
Distortion: ≤0.1%
Input terminal: 3.5mm stereo plug
Max. Input power: **0mW
Max. Output power:*0mW
Noise cancellation depth: *8dB
Noise cancellation frequency: *****0Hz
S/N:≥*5db
Power supply:3.7v/**0mAh lithium chargeable battery
Battery work time: >*5h
Noise reduction mode: feedback active noise cancellation  
Speaker diameter: Φ*0mm
Speaker impedance: *2Ω
Speaker frequency range:*0Hz**0KHz
Sensitivity: **5dB
Diaphragm thickness: *9 mil
Wire:  1.5m shielded cable
Package:
single N.W: **2g
single G.W: **3g
single size: *8X*8X5.8cm 
*0pcs 1 carton
carton size: *1X*8X*8cm 
G.W: 9.5kg