Type: Bluetooth speaker Connection mode: Bluetooth connection Interface type: USB Battery capacity: 600mah Frequency response range: 120hz-20khz Output power: 3W * 1 SNR: ≥ 85dB Power supply mode: built in lithium battery Extended storage: 32GB Bluetooth protocol: 4.2 Number of horns: 1 + 1 diaphragm Effective distance: 10M Functions: card, radio, U disk, voice prompt, call function Operation mode: key General population Display: None Playback format: MP3 Shell material: plastic Whether app is supported: no Speaker adjustment mode: key Whether there is radio function: Yes Box material: plastic Appearance dimension: 123 * 46 * 81mm