Built-in Bluetooth 2.1 + EDR wireless module. 
Bluetooth audio sound, perfect sound quality, and bass effect. About 10M transmission distance. Support phone, iPod, and other devices with Bluetooth function. 

Bluetooth hands-free function, answer calls easily. Bluetooth music controlling function. 
The built-in rechargeable Li-ion battery lasts for up to about 7 hours per charge.

 
Technical parameters: 
Rated impedance:4.0hm 
Rated power:3W 
Rated voltage: DC5V 
Frequency response:3dB 
RMS:1.2W 
Frequency scope: 170-15KHz 
Power supply: DC 5V Built-in Li-ion battery 
Speake:2 inches
Weight: 300g

SKU:1005003594503689