P21 wireless bluetooth speaker

Type: Bluetooth speaker
Connection method: Bluetooth connection
Interface type: USB
Battery capacity: 1800 mA
Frequency response range: 100HZ-20KHZ
Output power: 10W*2
Signal to noise ratio: ≥75dB
Power supply mode: built-in lithium battery
Channel: 2.1
Expansion storage: 32GB
Bluetooth protocol: 4.2
Number of speakers: 2
Effective distance: 10 meters
Function: insert card, voice prompt, call function
Operation mode: button
Play format: MP3
Shell material: plastic
Speaker adjustment method: button