USB/SD/FM/BT/SPEAKING 
                       
Output power:3W(2')*2

Frequency

response:35Hz-20kHz 

Power Requirement:DC 5V  The built-  in  1200mAH lithium battery   



Size:L285*W80*H200MM 

Carton Size:L520*W320*H480MM ,10pcs/CTN