About this item Ultra-portable JBL Pro Sound with punchier bass: Don't let its little size fool you. The JBL Go 4 packs a serious musical punch. Your friends won't believe how much great JBL Pro Sound comes out of such a small speaker. Up to 7 hours of playtime plus 2 hours with Playtime Boost: Don't sweat the small stuff like charging your battery. JBL Go 4 gives you up to 7 hours of playtime on a single charge. Tap Playtime Boost to add up to 2 more hours to your battery life. Waterproof and dustproof: The JBL Go 4's IP67 waterproof and dustproof rating ensures this portable speaker can handle almost any environment, from a poolside party to a seaside picnic. Multi-speaker connection by Auracast: Want even bigger JBL Pro Sound? Pair two Go4s for stereo sound, or wirelessly connect multiple JBL Auracast-enabled speakers using Auracast for even bigger sound. Made in part with recycled materials: The JBL Go 4 incorporates post-consumer recycled plastic and fabric for the speaker grille. It's also packaged in FSC-certified paper printed with soy ink.