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, delivering big JBL Pro Sound with punchy bass. 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. Simply tap Playtime Boost to prolong the playtime, adding up to 2 hours to your battery life. It tunes and optimizes the performance for louder and crisper sound. 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. Vibrant color options - The JBL Go 4 features exclusive colorways inspired by the latest street fashion and lifestyle trends, introducing completely new shades and combinations. JBL Portable app - Use the JBL Portable app to receive updates, get product support, and unlock features, all straight from your phone. Fine-tune your sound with multiple EQ presets options. Or use the fully customizable equalizer to adjust highs, mids and lows so your music is just right for you.