Soft on the edges with a smooth personality aGroove will make you dance the night away. aGroove from Kreafunk is getting jiggy with it so join in and let loose to the crisp sound of your favourite tunes.• Bluetooth 3.0 and EDR standard stereo technique• Power consumption: 300MA• Charging voltage: DC-5.0V – USB Cable• Working voltage: 3.7-4 .2V*• Speaker resistance: 4Ω• Charging current: 1-2A (Max)• Discharge voltage/current: 5V/1A• Frequency distortion: <1%• Working time: 24H (80% volume)• Speaker distortion: ± 5% MAX• Speaker resistance: 4Ω/3W * 2• Including USB + AUX-cable• 65x200x28 mm (HxWxD)• CE, WEEE, ROHS, FCC