Price history
Ultimate Ears WONDERBOOM 4 Waterproof Bluetooth Speaker
Posted by Deal Collector
4.5
(2,355 reviews)
🔥 3,000+ bought in past month
$51.44
$99.99
Typically ~$78 over the past year · verified by Thrifle price tracking
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
Price history
Amazon has the Ultimate Ears WONDERBOOM 4 Portable Bluetooth Speaker in Blue for $51.44 — 49% off the $99.99 list price. Rated 4.5 out of 5 stars across 2,328 reviews, with 500+ bought in the past month.
The Wonderboom 4 punches well above its size. True 360-degree sound, 14 hours of battery life, IP67 waterproofing (can be submerged in 1 meter of water for 30 minutes), floats, and a 131-foot Bluetooth range. The Outdoor Boost mode tunes the EQ for open environments, and a new Podcast Mode makes vocals sound clearer — a genuinely useful addition. The loop handle makes it easy to clip to a bag, hang from a tent, or carry one-handed.
Pair two units for true stereo left-right sound. Google Fast Pair means Android users connect instantly with one tap.
Reviewers consistently call it "small but mighty" — multiple owners mention being surprised by how loud it gets without distortion, and several bought a second one specifically to pair in stereo. The one legitimate gripe worth knowing: the battery indicator is vague — it just says "normal battery level" across a wide range, so you won't know exactly how much charge is left.
Blue is the only color at the 49% off price — other colors are 30% off at $69.99. Free 30-day returns through Amazon.
Frequently asked questions
4 questions
Is this a good price for Ultimate Ears WONDERBOOM 4 Waterproof Bluetooth Speaker?
At $51.44, this is 49% off the listed retail price of $99.99 — a verified saving of $48.55.
What is Amazon's return policy?
Amazon offers a 30 days return window. Free returns: Yes (most items). Restocking fee: None (marketplace sellers may vary). See the full Amazon return policy at https://thrifle.com/return-policy/amazon.
Is this in stock?
As of the last refresh, Ultimate Ears WONDERBOOM 4 Waterproof Bluetooth Speaker is in stock at the listed retailer. Stock and pricing can change at any time — click Buy to see live availability.
When does this deal expire?
This deal is expected to remain valid through approximately 2026-06-27. Deal prices and availability can change at any time without notice — buy soon if you want to lock in this price.