Version:  Bluetooth:4.0
Bluetooth Profiles： A2DP V1.2/AVRCP V1.0/HSP V1.2/HFP V1.6
Channel: Two-channel Stereo
SNR: ＞75dB
Distortion degree： ＜0.1%
Frequency response:  20Hz-20KHz
Drive unit：  10mm
Impedance： 32Ω
Sensitivity： 102.3dB
Microphone Sensitivity： -54±2dB
Transfer Distance:  33FT/10M
Charging port： Micro USB
Battery capacity:  85mA
Charging interval: ≈2hours
Working lasting time： ≈4.5hours
Talking lasting time： ≈4.5hours
Low voltage alarm signal: The Red LED blinked every 5 seconds,with warning tone
Battery status indication: Support IOS
Multi-point:  HFP+A2DP
Voice prompt Built-in： English/Chinese
NFC built-in： NO
Support Wire： NO
Support MP3: NO
Support FM: NO
Weight： 25g
Size for Unit： 500mm*13mm*24mm