Portable speaker effective output 4 watt speaker system 10 mono principle active frequency response 60 20000 hz amplifier type digital power supply rechargeable battery colour red design mini speaker analogue input 35mm jack line in width 54 mm height 82 mm depth 54 mm weight 016 kg area of use en route garden compatible with mp3 players laptops games consoles signal to noise ratio 91db run time 8 18 hours