Unit weight  220G
Unit size   200*80*45mm
Packing     Gift box
Built in 1000mAh Battery (high-performance polymer) 
Rated Charging Time: 5-6 Hours 
3.5mm Audio Cable & USB micro Charging Cable Included 
Power Source: DC5V~USB / 1000mAh Battery 
nornal playing time  :   4 hours 

Brand : OEM
 Signal Noise Ratio: > 75dB
 Frequency Range: 2.4GHz
Transmit Distance: > 10 Meters
The largest volume playing time: 2 hours
 Sensitivity : -90dbm@0.1%BER
 Frequency Response: 90Hz~20KHz
Impedance:  4 Ohm
TF flash card Playback: MP3, WMA & WAV
Rated frequency:2.40-2.480(HZ)
degree of distortion:≤0.01%

Bluetooth V3.0+RDA-5850,  support  OPP OBEX,SPP,A2DP,AVRCP,FTP,HS/HF,DUN,PROFILES