Product Information: Function: Insert card, drop resistance, voice prompt, call function Type: Bluetooth speaker Connection method: Bluetooth connection Interface type: TF Frequency response range: 20Hz-16KHz Output power: 10W Signal to noise ratio: ≥75dB Power supply mode: built-in lithium battery Playing time: 8 hours Bluetooth protocol: 5.0 Number of speakers: 2 Effective distance: 15 meters Operation mode: button Play format: MP3 Shell material: ABS Cabinet material: ABS Appearance size: 18.2*5*6.7cm Color: white, blue, black Specification: English + neutral packaging Power supply mode: USB Built-in battery capacity: 1200 mA-2000 mA Battery capacity: 1200mah Packing List: Host x1 Charging cable x1 Audio cable x1 Manual x1 Color box packaging x1