Waterproof bluetooth speaker

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Type: Bluetooth speaker
Connection method: Bluetooth connection
Interface type: USB
Battery capacity: 3000mah
Frequency response range: 100HZ-20KHZ
Output power: 30W
Signal to noise ratio: ≥75dB
Power supply mode: built-in lithium battery
Channel: 2
Playing time: 12h
Expansion storage: 32GB
Bluetooth protocol: 5.0
Number of speakers: 2
Effective distance: 10 meters
Function: insert card, waterproof, dustproof, drop-proof, voice prompt, call function
Operation mode: button
Play format: MP3, WMA, WAV
Support format: SD card