1.Bluetooth version: jieli latest version                 
2.Output：5v/1A Max    Input:5V/1A            
3.Spearker：4Ω                     
4.Transmission：10m                     
5.Frequency：20Hz-20KHz            
6.Output power：3w                            
7.SNR：≥90dB                 
8.Work voltage：3.7V
9.Distortion：0.1％                   
10.LED power：1W 
11.Battery capacity:4000mAH
12.Working time:>8~10 hours
13.Charge time: 3 hours