Product Details:
 
-Bluetooth Name : Crystal can. 
-Bluetooth version : 3.0. 
-Output Power : 3W. 
-Transmission distance : 10M. 
-Speaker : ?50 4? 3W.
-The battery : 18650 3.7V. 
-The charger : 5V 1A.
-Product size : ?80x136mm.