Amazon is currently offering the Ultimate Ears WONDERBOOM 4 Portable Waterproof Bluetooth Speaker down at $51.44 shipped in its blue colorway, while alternate colorways start at higher prices. While it may carry a $100 MSRP directly, it only climbs as high as $80 at Amazon, with discounts in 2026 having kept the cost down at this same rate since the end of May. You’ll benefit from a $29 markdown here, giving you the second-lowest price we have tracked – only $2 above the low that last appeared during Prime Day in June.
You’ll enjoy up to 14 hours of wireless and 360-degree audio playtime and with this WONDERBOOM 4 speaker from Ultimate Ears, giving you a full stereo experience in one compact device. It comes boasting an IP67-rated waterproof and dustproof construction, not to mention it floats should it get knocked into a pool, lake, or other bodies of water, handling submersion for up to 30 minutes. You can also pair two of these speakers together for even larger soundscapes, not to mention it offers a 131-foot range with Bluetooth connection, so you don’t need to stick next to it while at gatherings.
You can find more deals like this over in our dedicated speakers hub here.
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Ultimate Ears WONDERBOOM 4 Portable Speaker <a href="https://myappsplus.com/new-features-added-to-iphone-photos-app-in-ios-27/” title=”New features added to iPhone Photos app in iOS 27″>features:
- Balanced 360-Degree Sound: The WONDERBOOM 4 portable waterproof Bluetooth speaker features 360-degree sound in a petite package; boosted sound for up to 14 hours of playtime
- Outdoor Boost and Podcast Mode: Engineered for full stereo sound; tap the Outdoor Boost button for outdoor environments; use the new Podcast Mode to make vocals sound rich and clear
- 14 Hours of Boom: With a rechargeable battery that lasts throughout the day, this waterproof portable speaker booms on with up to 14 hours of playtime, so you can soak up every moment; Charging via USB-C cable (not included)
- Waterproof, Dustproof, and Floatable: IP67-rated this Bluetooth waterproof speaker can be submerged in 1m of water for 30 min; protected from dust; ideal for the pool, beach, or shower
- Double Up for Stereo: Pair up two WONDERBOOM 4 portable Bluetooth speakers for even bigger sound; press once to double up; press again for true stereo from both speakers, with left and right channels (not compatible with PartyUP)
- Durable Wireless Speaker With Range: 131 feet (40 meters) of range so you’re free to roam; plus it’s dirt-resistant and drop-proof (1) with a handy loop so you can take it with you
- Made With Recycled Plastic: Plastic parts in the WONDERBOOM 4 wireless Bluetooth speaker include a minimum of 31% post-consumer recycled plastic by weight
- (1) Drop-tested from 5 ft / 1.5 m
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