Short answer: the Tronsmart T8. It ranks #54 of 182 medium speakers by sound quality, rated 3.6/5, at $49.99; the Ultimate Ears Wonderboom 4 ranks #110, rated 2.9/5, and costs $64.99, so there is not much of a tradeoff to weigh.
The Tronsmart T8 is the better-sounding choice. An affordable waterproof speaker with upward firing drivers that spread sound around, plus lights, app EQ, an aux input and stereo pairing. It keeps a wired aux input, which the Ultimate Ears Wonderboom 4 lacks. It has an adjustable EQ, which the Ultimate Ears Wonderboom 4 lacks. The tradeoff: Against the Xiaomi Sound Outdoor, listeners in Mateusz Cholewa’s comparison found the T8 harsh and tiring, and Techder Audios’ test showed the Xiaomi Sound Party with deeper, heavier bass.
The Ultimate Ears Wonderboom 4 is the lighter choice. A small, tough waterproof speaker with a strap loop and USB-C charging, easy to clip on a bag for outdoor trips. At 0.9 lbs (420 g) it weighs much less than the Tronsmart T8 at 1.8 lbs (800 g). The catch: Bass isn’t as deep as the top-ranked speakers and is a little thuddy.
Buy the Tronsmart T8. It is rated higher for sound quality than the Ultimate Ears Wonderboom 4 and costs less, which makes it the one to get unless you need something the other one does better.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Prices on this page were last checked November 14, 2026 at 6:17 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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Specifications Side By Side
| Tronsmart T8 | Ultimate Ears Wonderboom 4 | |
|---|---|---|
| Price | $49.99 | $64.99 |
| Ranked | #54 of 182 in Medium Size Portable Bluetooth Speakers | #110 of 182 in Medium Size Portable Bluetooth Speakers |
| Stereo | Partially | No |
| Amplifier Power | 40W | - |
| App | Yes (Tronsmart) | No |
| Aux Input | Yes | No |
| Battery Life | 18 hours at 50% volume, lights off (Manufacturer specified) | 14 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.3 | 5.2 |
| Charging Time | 4.5 hours | - |
| Dimensions | 8.6”H x 3.2”W x 3.2”D (218 x 82 x 82 mm) | 4.1” x 3.8” (104 x 95.3 mm) |
| Drivers | 2x upward firing full-range drivers + 1x woofer + 2x passive radiators | 2x 40mm active drivers + 2x passive radiators (46.1 x 65.2mm) |
| EQ | Yes (app) | No |
| Frequency Response | 56Hz - 20kHz (Manufacturer specified) | - |
| IP Rating | IPX7 | IP67 |
| Lights | Yes | - |
| MicroSD Playback | Yes | - |
| Omnidirectional | Pointing up | Yes |
| Power Input | USB-C | USB-C |
| Strap | Yes (lanyard) | Yes (built-in loop) |
| TWS | Yes | Yes |
| Weight | 1.8 lbs (0.80 kg) | 0.9 lbs (420 g) |
| Maximum SPL | - | 87dB (Manufacturer specified) |
| Party Mode | - | No |
| Built-in Microphone | - | No |
| Power Bank | - | No |
| Digital Aux Input | - | No |
| Bluetooth Codecs | - | SBC |
Where the Ratings Come From
- Tronsmart T8: reviews by Mateusz Cholewa, Techder Audios and Jagist.
- Ultimate Ears Wonderboom 4: reviews by Smart Home Sounds and YouTube.
This comparison is generated from the ratings, specifications and measurements on each product’s own page, and it updates when that data changes. How we rank explains how each rating is decided.
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