These are not really the same size class, and that is the honest framing here. The Tribit Stormbox Micro 3 ranks #6 of 62 small speakers by sound quality at $56.76; the Sony ULT Field 3 ranks #71 of 179 medium speakers by sound quality at $208.
The Tribit Stormbox Micro 3 is the lighter pick. A tough strap on mini speaker with full waterproofing, a 24 hour battery and a power bank output. At 0.7 lbs (330 g) it weighs much less than the Sony ULT Field 3 at 2.6 lbs (1.2 kg). The catch: Bass is thuddy and distorted by default and needs EQ.
The case for the Sony ULT Field 3: A rugged waterproof stereo speaker with long battery life, a detailed app EQ, a shoulder strap and a phone charging port. It supports LDAC Bluetooth, which the Tribit Stormbox Micro 3 lacks. It links with other speakers (Party Connect up to 100 speakers), which the Tribit Stormbox Micro 3 cannot. It plays in stereo from a single unit, unlike the Tribit Stormbox Micro 3. The tradeoff: Sounds a bit hollow, a bit boosted in the treble.
Buy the Tribit Stormbox Micro 3 at $56.76 if you want a small speaker. Buy the Sony ULT Field 3 at $208 if you want a medium speaker instead.
Looking for alternatives? See the complete Portable Bluetooth rankings.
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 | Sony ULT Field 3 | |
|---|---|---|
| Price | $56.76 | $208.00 |
| Ranked | #6 of 62 in Small Size Portable Bluetooth Speakers | #71 of 179 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Aux Input | No | No |
| Bass Extension (-10dB) | 62Hz | - |
| Battery Life | 24 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | AAC, SBC | SBC, AAC, LDAC |
| Built-in Microphone | Yes | Yes |
| EQ | Yes (9 Band) | Yes (App + ULT button) |
| IP Rating | IP68 | IP67 |
| Maximum SPL | 93dB (measured by Alan Ross Reviews) | - |
| Party Mode | No | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes (USB-C) | Yes (USB-C, 5V/1.5A) |
| Power Input | USB-C | USB-C |
| Stereo | No | Yes |
| Omnidirectional | Pointing up | No |
| TWS | Yes | Yes |
| Weight | 0.7 lbs (330 g) | 2.6 lbs (1.2 kg) |
| Bluetooth Version | 6.0 | 5.2 |
| Amplifier Power | 13W | 27W |
| Dimensions | 4.4” x 4.2” x 1.8” (112 x 107.9 x 45 mm) | 10.1” x 4.4” x 3.1” (256 x 113 x 79 mm) |
| Drivers | 48mm NdFeB driver with coaxial passive radiators | 1x 20mm tweeter + 1x 86mm x 46mm woofer |
| Digital Aux Input | No | No |
| Strap | Yes (built-in strap) | Yes (detachable shoulder strap) |
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