Details: Connection method: Bluetooth connection Interface type: USB Battery capacity: 800 Frequency response range: 100HZ-20KHZ Output power: 3W Signal to noise ratio: ≥75dB Power supply mode: built-in lithium battery Channel: 5.1 Play time: 6 hours Bluetooth protocol: 5.0 Number of speakers: 1 Effective distance: 10 meters Operation mode: Button Support format: U disk Appearance size: 138*50*86mm