Heavy Bass

The JBL Boombox 4 delivers an ultra-powerful and fully waterproof audio solution for your mobile entertainment. Specifically, it uses intelligent AI Sound Boost technology to keep your sound pristine at extreme volumes. Consequently, it is the ultimate choice for users who need deep bass and massive projection for outdoor venues. Because it features a swappable battery and up to 34 hours of total runtime, you can keep the party going safely anywhere. Available now at a competitive rate.