JBL Pro Sound with an optimized long excursion driver, separate tweeter and dual JBL bass radiators | Long lasting battery delivers up to 20 hours of playtime | Take the Charge with you anywhere due to its IP67 waterproof and dustproof rating | PartyBoost feature allows you to pair two JBL PartyBoost-compatible speakers together in stereo or link multiple JBL PartyBoost-compatible speakers for really incredible sound | Built-in powerbank lets you charge your devices without taking a break