Wireless bluetooth speaker

Type: Bluetooth speaker Connection method: Bluetooth connection Interface type: USB Battery capacity: 300 Frequency response range: 100HZ-20KHZ Output power: 3W Signal to noise ratio: ≥75dB Power supply: built-in lithium battery Channel: Single speaker Playing time: 2 hours Extended storage: 32GB Bluetooth protocol: 5.0 Number of speakers: 1 Effective distance: 15 meters Function: audio input, voice prompt, card, radio, call function Mode of operation: Button Display: None Play format: MP3, WMA Shell material: plastic Support format: TF card Speaker adjustment method: Button Is there a radio function: Yes Box material: plastic Packing list: speaker, manual, charging cable, audio cable Power supply: USB Color: white, pink, blue, yellow, black