Plays audio from USB or audio cable - mini high powered speakers for your MP3/MP4 Player, Laptop/Notebook, PC, MP3 / MP4 mobile phone. Incorporates microphone so you can use it for hands-free function with mobile phone. Manufacturer specifications : Compatible with Ipod Nano and Video All Versions Compatible with normal MP3/MP4 players, LAPTOP, PC and other A/V devices, connect by standard line-in jack or stream by USB. Compatible with MP3/MP4 mobile phones: Sony Ericsson, Nokia, Motorola, and other USB interface: Streaming music access, Recharging Power: AC 100V-220V (50Hz-60Hz) DC 12V/1A Speaker Output: 2X5W (stereo) Speaker Frequency Response: 100HZ~18KHZ Speaker Input Sensitivity: 500mv-1.5v Speaker Input impedance: ≥10KΩ Dimensions: 216x216x51 mm Accessories: AC Adaptor - one piece USB Cable - one piece Dock Adaptor : Nokia/Sony Ericsson/Ipod Compatible With: Apple: iPod 3G, iPod 4G, iPod Color, iPod Mini, iPod Nano, iPod Nano 2G, iPod Photo, iPod Video Nokia: 3230, 5200, 5500, 6070, 6080, 6085, 6103, 6230, 6230i, 6260, 6270, 6280, 6630, 6670, 6680, 6681, 7370, 7373, 7390, 7610, 9300i, 9500, E50, E60, E61, E70, N70, N71, N72, N73, N80, N90, N91, N92, N95 Sony Ericsson: D750i, K750i, K790i, K800i, M600i, W300i, W550i, W700i, W710i, W800i, W810i, W850i, W900i, W950i, Z530i, Z550i, Z710i Sony: PSP