JBL Go 4 Portable Bluetooth Speaker - BlackWaterproof and dustproof The JBL Go 4s IP67 waterproof and dustproof rating ensures this portable speaker can handle almost any environment, from a poolside party to a seaside picnic. Up to 7 hours of playtime plus 2 hours with Playtime Boost Dont sweat the small stuff like charging your battery. JBL Go 4 gives you up to 7 hours of playtime on a single charge. Simply tap Playtime Boost to prolong the playtime, adding up to 2 hours to your battery