Portable Waterproof Bluetooth Speaker w/ 24 Hour Playtime. JBL Boombox 2 brings it with monstrous bass, bold design, and an incredible 24 hours of playtime. IPX7 waterproof and portable, this powerful Bluetooth speaker pumps out massive sound all day and all night. Plus, you can connect other JBL PartyBoost-compatible speakers to turn the party up. JBL Boombox 2 keeps your friends dancing and its built-in power bank keeps your devices charged. So you can groove from dusk till dawn and keep going strong!