Portable speaker power rating 6 watt effective output 6 watt speaker system 20 stereo principle active frequency response 150 18000 hz amplifier type digital power supplies rechargeable battery batteries usb battery life 5 h colour blue functions calendar function clock alarm analogue input 35mm jack line in digital inputs usb other connections micro sd slot usb width 75 mm height 60 mm depth 170 mm weight 027 kg area of use en r