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 Bose Soundlink Flex ranks #38 of 179 medium speakers by sound quality at $79.99.
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 12 for the Bose Soundlink Flex. At 0.7 lbs (330 g) it weighs much less than the Bose Soundlink Flex at 1.3 lbs (589 g). It supports AAC Bluetooth, which the Bose Soundlink Flex lacks. The catch: Bass is thuddy and distorted by default and needs EQ.
The Bose Soundlink Flex is the louder choice. A small, rugged waterproof speaker that survives drops and floats, with a warm, bass forward sound for casual outdoor use. Alan Ross Reviews measured it at 96dB at full volume, against 93dB for the Tribit Stormbox Micro 3. It links with other speakers (Bose Party mode), which the Tribit Stormbox Micro 3 cannot. The tradeoff: Warm sounding with overly boosted bass which drowns out midrange detail.
Buy the Tribit Stormbox Micro 3 ($56.76) for a small speaker; the Bose Soundlink Flex ($79.99) suits a medium speaker instead.
Want more options? Browse the full 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 | Bose Soundlink Flex | |
|---|---|---|
| Price | $56.76 | $79.99 |
| Ranked | #6 of 62 in Small Size Portable Bluetooth Speakers | #38 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) | 12 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | AAC, SBC | SBC |
| Built-in Microphone | Yes | Yes |
| EQ | Yes (9 Band) | No |
| IP Rating | IP68 | IP67 |
| Maximum SPL | 93dB (measured by Alan Ross Reviews) | 96dB (measured by Alan Ross Reviews) |
| Party Mode | No | Yes (Bose Party mode) |
| 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) | 1.3 lbs (589 g) |
| Bluetooth Version | 6.0 | 4.2 |
| Amplifier Power | 13W | - |
| Dimensions | 4.4” x 4.2” x 1.8” (112 x 107.9 x 45 mm) | 7.9” x 3.5” x 2” (201 x 90 x 52 mm) |
| Drivers | 48mm NdFeB driver with coaxial passive radiators | 1x 60mm full-range driver + 2x passive radiators |
| Digital Aux Input | No | No |
| Strap | Yes (built-in strap) | Yes (built-in loop) |
| Bluetooth Latency | - | 33ms |
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