These sit in different size classes, so this is not a straight ranking comparison. The Tribit Stormbox Micro 3 ranks #6 of 62 small speakers by sound quality at $56.76; the Ultimate Ears Wonderboom 4 ranks #109 of 179 medium speakers by sound quality at $64.99.
The Tribit Stormbox Micro 3 is the longer-running, lighter choice. A tough strap on mini speaker with full waterproofing, a 24 hour battery and a power bank output. It is rated for 24 hours of battery against 14 for the Ultimate Ears Wonderboom 4. At 0.7 lbs (330 g) it weighs noticeably less than the Ultimate Ears Wonderboom 4 at 0.9 lbs (420 g). It supports AAC Bluetooth, which the Ultimate Ears Wonderboom 4 lacks. The catch: Bass is thuddy and distorted by default and needs EQ.
The case for the Ultimate Ears Wonderboom 4: A small, tough waterproof speaker with a strap loop and USB-C charging, easy to clip on a bag for outdoor trips. The catch: Bass isn’t as deep as the top-ranked speakers and is a little thuddy.
Buy the Tribit Stormbox Micro 3 at $56.76 if you want a small speaker. Buy the Ultimate Ears Wonderboom 4 at $64.99 if you want a medium speaker instead.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Prices on this page were last checked November 7, 2026 at 7:34 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
| Tribit Stormbox Micro 3 | Ultimate Ears Wonderboom 4 | |
|---|---|---|
| Price | $56.76 | $64.99 |
| Ranked | #6 of 62 in Small Size Portable Bluetooth Speakers | #109 of 179 in Medium Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | No | No |
| Bass Extension (-10dB) | 62Hz | - |
| Battery Life | 24 hours (Manufacturer specified) | 14 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | AAC, SBC | SBC |
| Built-in Microphone | Yes | No |
| EQ | Yes (9 Band) | No |
| IP Rating | IP68 | IP67 |
| Maximum SPL | 93dB (measured by Alan Ross Reviews) | 87dB (Manufacturer specified) |
| Party Mode | No | No |
| Power Bank | Yes (USB-C) | No |
| Power Input | USB-C | USB-C |
| Stereo | No | No |
| Omnidirectional | Pointing up | Yes |
| TWS | Yes | Yes |
| Weight | 0.7 lbs (330 g) | 0.9 lbs (420 g) |
| Bluetooth Version | 6.0 | 5.2 |
| Amplifier Power | 13W | - |
| Dimensions | 4.4” x 4.2” x 1.8” (112 x 107.9 x 45 mm) | 4.1” x 3.8” (104 x 95.3 mm) |
| Drivers | 48mm NdFeB driver with coaxial passive radiators | 2x 40mm active drivers + 2x passive radiators (46.1 x 65.2mm) |
| Digital Aux Input | No | No |
| Strap | Yes (built-in strap) | Yes (built-in loop) |
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