Bluetooth Specs :4.0+EDR  (CSR)
Bluetooth Profile :A2DP;AVRCP;HFP  
NFC function(optional)
Operation Distance : Up to 10M
Output Power  :5W*2 
Lithium battery  :3.7V 2200mAH 
Playback time : Up to 10 hours 
Charging time  :2-3 Hours 
Frequency Response :50HZ-20KHZ 
S/N Ratio :(79)± 2dB.
Input Sensitivity :600mv RMS 
Distortion :  <=10%