Digital Speaker

Dimensions:Ø70x90mm(LxWxH)
Power output:3W
Impendence:4Ω
R.Frequency: 90Hz-20Khz
S/N Ratio:≥80db
Audio Input: AUX
Power: Built-in li-polymer battery(180mAh/220mAh/ 300mAh)
Power by USB
AC adaptor for option