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 Soundcore Boom 3i ranks #31 of 179 medium speakers by sound quality at $118.99.

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 16 for the Soundcore Boom 3i. At 0.7 lbs (330 g) it weighs much less than the Soundcore Boom 3i at 1.7 lbs (783 g). The catch: Bass is thuddy and distorted by default and needs EQ.
The case for the Soundcore Boom 3i: A warm, punchy waterproof speaker that sounds great and is a strong value. The catch: Not quite as good as a JBL Charge 5, doesn’t go quite as loud or sound quite as balanced, but very very close.
Buy the Tribit Stormbox Micro 3 ($56.76) for a small speaker; the Soundcore Boom 3i ($118.99) suits a medium speaker instead.
Looking for alternatives? See the complete Portable Bluetooth rankings.
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Specifications Side By Side
| Tribit Stormbox Micro 3 | Soundcore Boom 3i | |
|---|---|---|
| Price | $56.76 | $118.99 |
| Ranked | #6 of 62 in Small Size Portable Bluetooth Speakers | #31 of 179 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Aux Input | No | No |
| Bass Extension (-10dB) | 62Hz | 56Hz |
| Battery Life | 24 hours (Manufacturer specified) | 16 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | AAC, SBC | SBC, AAC |
| Built-in Microphone | Yes | Yes |
| EQ | Yes (9 Band) | Yes |
| IP Rating | IP68 | IP68 |
| Maximum SPL | 93dB (measured by Alan Ross Reviews) | - |
| Party Mode | No | No |
| Power Bank | Yes (USB-C) | - |
| Power Input | USB-C | USB-C |
| Stereo | No | No |
| Omnidirectional | Pointing up | No |
| TWS | Yes | Yes |
| Weight | 0.7 lbs (330 g) | 1.7 lbs (783 g) |
| Bluetooth Version | 6.0 | 5.3 |
| Amplifier Power | 13W | 50W |
| Dimensions | 4.4” x 4.2” x 1.8” (112 x 107.9 x 45 mm) | 8.3” x 3.3” x 3.1” (210 x 85 x 78.5 mm) |
| Drivers | 48mm NdFeB driver with coaxial passive radiators | 94mm woofer + tweeter |
| Digital Aux Input | No | No |
| Strap | Yes (built-in strap) | Yes (detachable strap) |
| Lights | - | Yes |
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