Product introduction: Types of: Radio bluetooth speaker Connection method: Bluetooth connection battery capacity: 1200 mAh Frequency Range: 60Hz-15KHz Output Power: 3W Signal to noise ratio: ≥70db Power supply: Built-in lithium battery Channel: 1 Play time: 8 hours Extended storage: TF card 32GB Bluetooth protocol: 4.2 Number of speakers: 1 piece effective distance: 10 meters Operation method: button shell material: plastic Speaker adjustment method: Knob Is there a radio function: Have Cabinet material: plastic physical dimension: 93*52*62mm product weight 0.3 (KG)