Type: Bluetooth speaker 
Connection method: Bluetooth connection
Interface type: USB
Battery capacity: 1500 mAh
Frequency response range: 100HZ-20KHZ
Output power: 5W
Signal to noise ratio: ≥75dB
Power supply: built-in lithium battery
Channel: 2.1
Playing time: 4h
Expansion storage: 32GB
Bluetooth protocol: 4.1
Number of speakers: 2