JBL PartyBox 720 SpeakerJBL PartyBox 720 Speaker We bring peak party energy wherever we go with the JBL PartyBox 720. Superior JBL Pro Sound, deep bass that hits just right, and a light show that goes all instarry lights, flowing trails, and pulsing strobes. With smooth wheels, a sturdy handle, and a splash proof design, were rolling the party everywhere we go. Replaceable batteries (sold separately) for up to 15 hours playtime. Multi speaker connection by Auracast.