S888a 2.1 ch subwoofer speaker vibration speaker Speaker power:10 watts rms per channel (2 channels) 30 watts rms subwoofer Frequency response:40hz ~ 20khz Satellite speakers (with stand):d82mm x w8mm x h1204mm Subwoofer: d21mm x w240m x h160mm Driver unit: 4 inchs + 3 inchs *2 Subwoofer enclosure material:wood and plastic Signal-to-noise ratio (snr):80db With fm vfd ok function , usb sd slot, remote controller Compatible with vcd , cd, ld stereo system High sound quality for pc games, music etc. Low distortion design for pc, notebook or mp3 player For both outdoor and domestic uses. Excellent frequency response . Satellite speakers (with stand):d82mm x w8mm x h1204mm Subwoofer: d21mm x w240m x h160mm Driver unit: 4 inchs + 3 inchs *2.
