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Waterproof Bluetooth Speaker Customization

Connection mode: Bluetooth connection
Interface type: USB
Frequency response range: 100HZ-20KHZ
Output power: 3W
Signal to noise ratio: ≥75dB
Power supply mode: built-in lithium battery
Sound track: 1
Play duration: about 3 hours
Bluetooth protocol: 4.0
Playback format: WAV,MP3,APE,WMA,FLC
Shell material: ABS
Appearance size: 80*80*28mm