JBL PartyBoost Unleashed: Sync, Pair, and Party with Your Portable Speakers - YouTube
Amazon.com: JBL Flip 6 - Portable Bluetooth Speaker, powerful sound and deep bass, IPX7 waterproof, 12 hours of playtime, JBL PartyBoost for multiple speaker pairing, for home, outdoor and travel (Red) : Electronics
JBL FLIP6 Portable Waterproof Speaker Gray JBLFLIP6GREYAM - Best Buy