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Restored JBL Charge 4 Portable Waterproof Wireless Bluetooth Speaker Black (Refurbished) - Walmart.com
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A third speaker makes all the difference. Adding the Xtreme 2 completely changed the sound for the better. : r/JBL
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Amazon.com: JBL Xtreme 2 Portable Waterproof Wireless Bluetooth Speaker - Black (Renewed) : Electronics
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