wireless portable bluetooth speaker

Support Bluetooth V2.1+EDR
BT Handfree for calls; echo processing
Transmission range: *0M
Built-in Li-ion Battery: 3.7V / **0MAH
Stereo sound output, Built-in bass diaphragm, perfect Bass effect
3.5mm Line in. Connect to MP3/PC/Other Audio. 
Bluetooth Profile:  high quality audio processing A2DP V1.2
Applicable for iPhone, iPod, mobile phone, computer, etc.
FM Radio function
Output voltage: 3.7V*4.2V
output power: 3.0W      Input: 5.0V
Loud speaker:  8 OHM/*3W
Signal and noise ratio(SNR):  MORE THAN *0db
Frequency Response: ****8KHZ
Output distortion rate :  LESS THAN 0.5%
Materials: Metal+Plastic