Power supplier Dc 5v
Output power3w(1khz, thd10%)
Frequency120hz-18khz
Signal&noise ratio¡y60db
Li-ion output3.75v~4.25v
Li-ion input 5v
Lithium battery capacity300mah
Speaker unit:31mm
Impedance4 ohm(|¸)
Dimensions30mm*35mm
Weight 60g
ColorBlack/red/white
Pvc box size:6.9*6.9*5cm
Carton size:52*36*29cm