Cool speaker from Kreafunk.Boasting its good looks and rugged charms the aMove portable music player will steal the spotlight everywhere. Free and unattached this bad boy will keep you company on the move and make sure you never skip a beat.• Bluetooth 4.0 and EDR + CSR• 1800 mAh powerbank built in• Built in microphone, answer phonecalls• 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: 20H (80% volume)• Speaker distortion: ± 5% MAX• Speaker resistance: 4Ω/3W * 2• Passive base element standard stereo technique• 70x163x50 mm (HxWxD) • Including USB + AUX-cable• CE, WEEE, ROHS, FCC