Ultimate Ears Wonderboom 4 drops to $51 with 49% off, delivering 14-hour battery life and excellent durability

Credit: Ultimate Ears Published Sep 22, 2026, 7:03 AM EDT Timi has been writing about technology for over a decade, focusing on smartphones, computers, and anything that he finds interesting in the tech space. He started writing for XDA, covering all things mobile, but has transitioned to covering deals, with a mission to shed light on some of the best discounts around the internet on the greatest tech products. Sign in to your XDA account If you need some extra punch for your tunes, this Ultimate Ears Wonderboom 4 portable speaker is going to be just the thing. Not only do you get great sound with IP67 water resistance. But the 14-hour battery life is also enough to last for a long outing. And the original $100 price tag is fair, we love that it's on sale right now from Amazon, with a superb discount that knocks 49% off, dropping it to just $51. Ultimate Ears WONDERBOOM 4 This Bluetooth speaker is powerful, with a 14-hour battery life and an IP67 water-resistant rating. It doesn't miss it at this price A compact speaker with a big sound, that's the Wonderboom 4. It's durable, so you can take it anywhere without having to worry about it getting damaged. The IP67 rating means you can take it to the beach, poolside, on hikes, or just have it tucked away in the corner of your home without it missing a beat. There even custom EQ settings designed to give your audio a boost when you need it. And if you need even more, you can always pair a couple of Wonderboom speakers together for a stereo experience. And as stated before, the battery life can last quite a while, with 14 hours of use from a single charge. And when you need to charge up, just plug it into an AC adapter using a USB-C cable. This is a portable Bluetooth speaker, so when it comes to range, at the maximum you can expect up to 130 feet. The consumer rating for this speaker is quite high, with a 4.4 out of 5-star rating coming from over 2,000 reviews. And with the price way below its MSRP, it makes it an even easier one to pick up if you're looking for a speaker that can handle anything you throw at it. Or if you're looking to be adventurous, you can always try and build your own.