Magic stand small speaker subwoofer $ 10.45 Connection method: 3.5MM audio jack Interface type: USB Battery capacity: 600mah Frequency response range: 100HZ-20KHZ Output power: 3W Power supply: built-in lithium battery Playing time: 8 hours Extended storage: not supported Number of speakers: 1 Function: proximity sensing Mode of operation: Button Play format: MP3, WMA, WAV, FLC, APE Shell material: plastic Cabinet material: ABS Appearance size: 747065mm