Portable bluetooth speaker

Type: Bluetooth speaker
Connection method: Bluetooth connection
Interface type: USB
Battery capacity: 1200mAh
Frequency response range: 100HZ-20KHZ
Output power: 3w*2
Signal to noise ratio: ≥75dB
Power supply mode: built-in lithium battery
Channel: 2
Play time: 6 hours
Expansion storage: 32GB
Bluetooth protocol: 4.2
Number of speakers: 2