The waterproof bluetooth speaker can be used as a power bank for other devices. 90W Max Bluetooth Speaker, IPX6 Waterproof Portable Speakers Wireless Bluetooth, 50W Deep Bass Loud Outdoor. 90W Peak Super Enhanced Bass and Hi-Fi Stereo - The 90W PEAK high powerful bluetooh speaker has the latest state-of-the-art FOUR DRIVERS and TWO PASSIVE BASS RADIATORS to enhanced deep bass and super high Hi-Fi sound.
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