Product Description:                       
Replacement Battery Model : SN10S20S     

Battery Capacity : 3.7V 850mAh 3.14Wh

                      
Compatable with : 
For Sena 10S Motorcycle Bluetooth Helmet Headset   

For Sena 20S EVO Bluetooth Headset 20S-EVO-01

Package include:   
1 *Replacement 850mAh Battery