Crack bluetooth macaron audio card mobile phone computer built-in battery mini subwoofer wireless luminous small speaker cover 10 meters

Type: Bluetooth speaker Connection method: Bluetooth connection Interface type: USB Battery capacity: 300mah Frequency response range: 100HZ-20KHZ Output power: 3W Signal to noise ratio: ≥75dB Power supply: built-in lithium battery Channel: 2.1 Playing time: about 2 hours Extended storage: 16GB Bluetooth protocol: 2.1 Number of speakers: 1 Effective distance: 10 meters Function: Card Mode of operation: Button Applicable people: General Display: None Play format: MP3, WMA, WAV Whether to support APP: No Support format: TF card Speaker adjustment method: Button Is there a radio function: Yes Appearance size: 58 * 53mm Product weight: 0.13 (KG) Print LOGO: Yes