JBL Xtreme 4 – Portable Bluetooth Speaker, Powerful Sound and Deep Bass, IP67 Waterproof, 24 Hours of Playtime, Powerbank, Auracast for Multi-Speaker Pairing (Black) About this item Next level massive JBL Pro Sound: Two woofers, two powerful drivers and dual pumping JBL Bass Radiators effortlessly deliver dynamic, immersive sound with deeper bass and plenty of detail. You’ll get lost in the music wherever you are. 24 hours of playtime plus 6 hours with Playtime Boost: Your listening adventures can last all day long. Take the JBL Xtreme 4 with you from room to room, out to your backyard party, or off to the beach. With 24 hours of battery life, you can play music ’til the sun goes down—and comes back up again—before you’ll need a recharge. Simply tap Playtime Boost to prolong the playtime, adding up to 6 hours to your battery life. It tunes and optimizes the performance for louder and crisper sound. Convenient shoulder strap: The speaker can be carried on the shoulder or can be adjusted as crossbody, whatever your style or the mood. Your listening adventures can last all day long. Take the JBL Xtreme 4 with you from room to room, out to your backyard party, or off to the beach. With up to 24 hours of battery life, you can play music ’til the sun goes down—and comes back up again—before you’ll need a recharge. Simply tap Playtime Boost to prolong the playtime, adding up to 6 hours to your battery life. It tunes and optimizes the performance for louder and crisper sound. AI Sound Boost: Get the most out of your speaker. AI Sound Boost analyzes the incoming signal in real time while simultaneously using an AI algorithm to predict loudspeaker movement and power response. It pushes the driver to its maximum capability, fully exploiting the dynamic range for better and more powerful sound. It also reduces distortion even at high volume, maximizing the bass output and overall loudness. Waterproof and dustproof: The JBL Xtreme 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? Stereo pair two Xtreme 4 speakers for a wider sound stage. For your biggest parties, multiple JBL speakers can be connected wirelessly using Auracast. You can also pump up your party with JBL PartyBoost by using the JBL Portable app to pair the Xtreme 4 with other JBL PartyBoost-compatible speakers.