Operating voltage: 5V
Input Mode: PC USB interface
Rated impedance: 4 Ohm
Frequency response: 100 Hz-18KHz
Max power output: 3W*2                    
Support TF Card & USB disk           
With FM radio function                 
Both can be used separately              
Built-in li-battery                      
Remote control function 
Material:aluminium alloy
N.Weight:326g
Product Size(cm) :5*5*5.5/5*5*3.5
Carton Size(cm) : 46*32*47/50pcs