"Main function introduction
1.Lithium battery with dual control protection board 2. 2.Built-in lithium battery continuous playback for 3-5 hours or more
3. Support stereo A2DP mobile phone music playback
4. Call cancellation echo processing, no noise
5. Bluetooth version: V4.0 (2.02-2.480GHZ)
6. Distance 10-15 meters
7. Stereo super bass surround effect 8. Head Line with memory wire."