What’s up, TM Nation! In this video I’m breaking down the JBL Xtreme 4 after absolutely hammering it for weeks, and I’ll tell you straight up: the biggest upgrade is the battery situation. JBL’s claiming 24 hours at 50% volume, and in my real-world testing I got about 14 hours around 80% volume (which is where most people will actually use it), and about 8 hours at max. The game-changer is the swappable battery setup—yeah, you’ve got to unscrew a few screws to keep that IP67 water resistance, but being able to swap batteries (and even use the same ones as the PartyBox 320) is a huge win for long days and parties. I also cover the design and build changes, like the slightly taller body and that sturdier base (finally) so you’re not dealing with rubber feet peeling off like older models. Sound-wise, it gets loud for the size with solid clarity—mids are clean and the highs have nice detail—but there’s a noticeable drop-off in quality above 80% volume, so I keep it in that 50–80% sweet spot. And the #1 feature that sets it apart from a lot of portable speakers is Auracast connectivity, because now you can link the Xtreme 4 with bigger JBL PartyBox speakers. I also keep it real about the trade-offs: no 3.5mm aux, no USB-A, and Bluetooth latency can be a problem for video.