Version V4.0
Frequency 2.40GHz-2.48GHz
Power :4 dBm, class 2
Effective range 10M
Sensitivity -84dBm / 0.1% BER
Frequency response 20 Hz - 20 KHz
S/N rate 70 dB
Distortion 0.10%
Speaker size 40mm
support A2DP 1.2, AVRCP 1.0, HSP, HSF 1.5
Voltage 3.7VDC (built-in 400MAH rechargeable battery)
talking time 10 hour
standby time 250hour
charge time 2-2.5 hour
current 40 mA
PACKAGE INCLUDED : 1 PC

If you are unsatisfied with your item for any reason, return it within 30 days of delivery.