Ultimate Ears WONDERBOOM 4 Portable Bluetooth Speaker
🔥 #33 in Portable Bluetooth Speakers · New Best waterproof portable speaker for travel and outdoor use
Ultimate Ears WONDERBOOM 4 Portable Bluetooth Speaker – Pink
Ultimate Ears 3.8
#33
in Portable Bluetooth Speakers
$74.99 →
As of Jul 13, 2026
AI-estimated. See how we score. How we score Affiliate link — we may earn a commission
01 / Spec
Top features
Driver OutputOmni-directional driver, ~10W RMS
Frequency Response20Hz–20kHz
Battery13 hours
The Ultimate Ears WONDERBOOM 4 is a compact 360-degree portable Bluetooth speaker designed for travelers and outdoor enthusiasts. It delivers balanced, room-filling sound with punchy bass across a 40m (131ft) Bluetooth range, making it suitable for small to medium spaces.
Key specs: IP67 waterproof and dustproof rating (floats on water), 13-hour battery life, quick USB-C charging, Bluetooth 5.3 connectivity, and stereo/party pairing for multi-speaker setups. The rubberized, drop-resistant design weighs just 285g, fitting easily into a backpack or beach bag.
Who it's for: Beach trips, camping, poolside gatherings, and travel. The WONDERBOOM line is beloved by portable-speaker fans for combining durability, portability, and accessible pricing. The balanced sound avoids the boomy coloration common in budget models, though it lacks an aux input or integrated mic. Current sale price ($74.99, down from $99.99) improves its value proposition significantly.
02 / Signals
Why it's hot
Rugged waterproof portable speaker—balanced 360-degree sound, 13-hour battery, pocketable.
- Value for money 93
- Review rating & velocity 85
- Community sentiment 91
- Brand reputation 100
- Search heat 77
- Est. return & defect rate 88
03 / Verdict
Pros & cons
Pros
- IP67 waterproof & dustproof, floats in water
- Balanced 360-degree sound, not boomy
- 13-hour battery life
- Ultra-portable at 285g with grab strap
- Sturdy rubberized drop-resistant design
- Stereo/party pairing for multiple speakers
- Excellent value at current sale price ($74.99)
Cons
- No 3.5mm aux input for wired devices
- No integrated microphone for calls
- Bass can lack depth in quiet genres
- Limited volume for very large spaces
- Bluetooth range (131ft) standard for category
Driver OutputOmni-directional driver, ~10W RMS
Frequency Response20Hz–20kHz
Battery13 hours
ChargingUSB-C, ~3 hours
Water Dust RatingIP67 (submerged to 1m, 30 mins)
BluetoothBluetooth 5.3
Wireless Range40m (131ft)
Stereo Multi PairingYes, stereo pair & PartyUp mode
Aux MicNone
Dimensions~8.2 × 7.5 × 8.2 cm
Weight285g
ColorsPink, Black, Mint, Blue
05 / Your take
How was Ultimate Ears WONDERBOOM 4 Portable Bluetooth Speaker – Pink?
Share your own experience to help other shoppers. Takes under a minute.
Thanks for your feedback!
Collected privately to sharpen our research — never published, and it doesn't affect rankings.
05 / Compare
Compare the best alternative
One useful head-to-head in Portable Bluetooth Speakers, with the rows most likely to separate the contenders.
Open full comparison → 
JBL Flip 5 Portable Bluetooth Speaker, Red
Sound
Balanced, clear mids; controlled bass Best sound Balanced, punchy, warm midrange
Battery (h)
13 hours Longest battery 12 hours
Durability
Rugged fabric/rubber; proven drop/water survival Proven rugged build, minimal defect rate
06 / Rivals
Compare with
07 / Variations
Other colors
08 / Browse
More in Portable Bluetooth Speakers
JBL Flip 5 Portable Bluetooth Speaker, Red
Portable Bluetooth Speakers
#1 of 28
JBL Go 3 Portable Bluetooth Speaker
Portable Bluetooth Speakers
#2 of 28
Anker Soundcore Portable Bluetooth Speaker (Red)
Portable Bluetooth Speakers
#3 of 28
Anker Soundcore 2 Portable Bluetooth Speaker
Portable Bluetooth Speakers
#4 of 28
As of Jul 13, 2026 
JBL Charge 5 Portable Waterproof Bluetooth Speaker (Teal)
Portable Bluetooth Speakers
#5 of 28
As of Jul 13, 2026 
Bose SoundLink Flex Bluetooth Speaker (2nd Gen)
Portable Bluetooth Speakers
#6 of 28
As of Jul 13, 2026 09 / Explore
