Mini wireless bluetooth speaker

Type: Bluetooth speaker
Connection method: Bluetooth connection
Interface type: USB
Battery capacity: 300 mA
Frequency response range: 40Hz-20KHz
Output power: 1
Signal to noise ratio: ≥70db
Power supply mode: built-in lithium battery
Channel: 2.1
Playing time: 2
Expansion storage: 16GB
Bluetooth protocol: 4.0
Number of speakers: 1
Effective distance: 10 meters