Power supplier:DC5V
Output power:3W(1KHz,THD10%)
Frequency:90Hz-20KHz
Signal&noise ratio:≥80dB
Impedance:4 OHM(Ω)
Li-ion Output:3.7V~4.2V+0.05V 
Li-ion Input:5V
Lithium battery:240mAh
Speaker Unit:36mm
Case Material:ABS
Dimensions:Dia66*78mm
Weight:108g
Color:Black,white