The nearly pocket-sized JBL Go 4 Portable Bluetooth Speaker in blue is an ultra-compact solution that provides clear and powerful JBL Pro Sound for you and your friends to enjoy almost anywhere. Carry it by the integrated finger loop or lay it down by the pool or at the beach. You don't have to worry as the Go 4 is both waterproof and dustproof. You can listen all afternoon with up to 7 hours of playback time, which can be extended by 2 hours with a tap of the Playtime Boost feature. If you need bigger sound, grab a second Go 4 speaker and pair them for stereo sound, or wirelessly connect the Go 4 to your existing JBL Auracast-enabled speakers.