Wireless speaker with rich stereo sound One 5 in. + two 2 in. built-in speakers Full range speaker and passive radiator delivers extra bass Lightweight and portable BluetoothR V 4.0 compatibility allows audio system to work with BluetoothR-enabled devices USB, microSDTM Card, aux, and microphone inputs FM tuner
Output power: 16 watts
Operating voltage: DC 5 volts 3.7 -volt, 2, 400 mAh rechargeable battery
AC output power: 110 volts to 240 volts, 50/60
Hz DC output power: 5 volts, 500 mA
Frequency response: 100 Hz to 20 kHz
Wireless range: 32.8 ft.