JBL Charge Essential Portable Bluetooth Speaker Make your adventures last even longer with the JBL Charge Essential. This portable Bluetooth speaker comes with powerful Original JBL Pro Sound, plus a handy power bank — all in one rugged, durable package. A convenient USB port lets you quickly charge your devices, so you can show off your DJ skills for longer. Your tunes will get everyone on the dancefloor, thanks to dual passive radiators intensifying the sound with rich, deep bass. With up to 20 hours of playtime and an IPX7 waterproof design, keep the party going wherever life takes you.