1. Support Bluetooth V3.0;                       
2. BT Handfree for calls; echo processing
3. Transmission range:<10M;       
4. Built-in rechargeable Li-ion Battery: 3.7V/400MA;
5. Stereo sound output, Built-in bass diaphragm,with perfect Bass effect  
6. Line in. Connect to MP3/PC/Other Audio.                   
7. Bluetooth Profile: high quality audio processing A2DP V1.2;                              
8. Low battery alarm function
9. Applicable for iPhone, iPod, mobile phone, computer,etc.

Output voltage:3.7V-4.2V
output power:3W
Input:5.0V
Loud speaker:4Ω / 3W
Signal and noise ratio(SNR):≥85db
Frequency Response:100-20KHZ
Output distortion rate≤0.5%
Battery: 400mA
material:Aluminum Alloy+ABS
Color:black/silver/pink/blue/green