JBL Pro Sound featuring two JBL bass radiators, a separate tweeter, and an optimized long excursion driver Playtime of up to 20 hours is provided by a long-lasting battery. Because of its IP67 waterproof and dustproof rating, you can carry the Charge with you wherever you go. With the PartyBoost feature, you can connect multiple JBL PartyBoost-compatible speakers for an amazing sound or pair two JBL PartyBoost-compatible speakers in stereo. With the integrated powerbank, you can charge your gadgets continuously.