JBL's PartyBoost is why I'll never buy another Bluetooth speaker - Android Authority
JBL PartyBox On-The-Go Portable Party Speaker Black JBLPARTYBOXGOBAM - Best Buy
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Amazon.com: JBL Boombox 2 - Portable Bluetooth Speaker, Powerful Sound and Monstrous Bass, IPX7 Waterproof, 24 Hours of Playtime, Powerbank, JBL PartyBoost for Speaker Pairing, for Home and Outdoor(Black) : Electronics
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JBL PartyBox 100 - High Power Portable Wireless Bluetooth Party Speaker - Walmart.com