These are not really the same size class, and that is the honest framing here. The EarFun Uboom L ranks #2 of 179 medium speakers by sound quality at $49.79; the Tribit Stormbox Micro 3 ranks #6 of 62 small speakers by sound quality at $56.76.
The EarFun Uboom L is the louder choice. A great value medium speaker with clear, natural sound, waterproofing, and a Video Mode that keeps audio in sync with video. Alan Ross Reviews measured it at 103dB at full volume, against 93dB for the Tribit Stormbox Micro 3. It keeps a wired aux input, which the Tribit Stormbox Micro 3 lacks. It plays in stereo from a single unit, unlike the Tribit Stormbox Micro 3. Watch for: It cannot produce real low-bass rumble or fill a large, noisy space, and the top end loses some detail.
The Tribit Stormbox Micro 3 is the longer-running, lighter option. 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 EarFun Uboom L. At 0.7 lbs (330 g) it weighs much less than the EarFun Uboom L at 1.4 lbs (650 g). Watch for: Bass is thuddy and distorted by default and needs EQ.
Buy the EarFun Uboom L at $49.79 for a medium speaker, or the Tribit Stormbox Micro 3 at $56.76 for a small 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
| EarFun Uboom L | Tribit Stormbox Micro 3 | |
|---|---|---|
| Price | $49.79 after coupon UBOOMLWC | $56.76 |
| Ranked | #2 of 179 in Medium Size Portable Bluetooth Speakers | #6 of 62 in Small Size Portable Bluetooth Speakers |
| App | Yes (firmware >= 1.2.6) | Yes |
| Aux Input | Yes | No |
| Aux Latency | 216ms | - |
| Bass Extension (-10dB) | 56Hz | 62Hz |
| Battery Life | 16 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | AAC, SBC | AAC, SBC |
| Built-in Microphone | Yes | Yes |
| EQ | Yes (10 band, firmware >= 1.2.6) | Yes (9 Band) |
| IP Rating | IP67 | IP68 |
| Bluetooth Latency | 400ms normal / 66ms low latency mode | - |
| Maximum SPL | 103dB (measured by Alan Ross Reviews) | 93dB (measured by Alan Ross Reviews) |
| Party Mode | No | No |
| Power Bank | No | Yes (USB-C) |
| Power Input | USB-C | USB-C |
| Stereo | Yes | No |
| Omnidirectional | No | Pointing up |
| TWS | Yes | Yes |
| Weight | 1.4 lbs (650 g) | 0.7 lbs (330 g) |
| Bluetooth Version | 5.0 | 6.0 |
| Dimensions | 3.1” x 8.3” x 2.8” (78 x 210 x 72 mm) | 4.4” x 4.2” x 1.8” (112 x 107.9 x 45 mm) |
| Drivers | 2x 55mm drivers + 2x passive radiators | 48mm NdFeB driver with coaxial passive radiators |
| Amplifier Power | 28W | 13W |
| Digital Aux Input | No | No |
| Strap | - | Yes (built-in strap) |
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