Short answer: the Tribit Stormbox Flow for battery life and USB-C phone charging. It runs up to 30 hours, roughly double most rivals, adds an IP67 carry handle and a USB-C port that charges your phone, though it is not stereo on its own and its midrange and bass are recessed about 4dB below 700Hz. The Ultimate Ears Boom 3 has a rugged IP67 floating shell and pairing for up to 150 speakers but only about 15 hours and thin bass.
Buy the Tribit Stormbox Flow. It is rated higher for sound quality than the Ultimate Ears Boom 3 and costs less, so only choose the other one for a particular feature it does better.
Want more options? Browse the full Portable Bluetooth rankings.
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Specifications Side By Side
| Ultimate Ears Boom 3 | Tribit Stormbox Flow | |
|---|---|---|
| Price | $132.99 | $79.99 |
| Ranked | #114 of 179 in Medium Size Portable Bluetooth Speakers | #58 of 179 in Medium Size Portable Bluetooth Speakers |
| Bass Extension (-10dB) | 91Hz | 47Hz |
| Battery Life | 15 hours (Manufacturer specified) | 30 hours (Manufacturer specified) |
| Party Mode | Yes (PartyUp up to 50 speakers) | - |
| Power Input | Micro USB | USB-C |
| Stereo | Yes | No |
| Omnidirectional | Yes | Pointing up |
| Weight | 1.3 lbs (608 g) | 1.4 lbs (657 g) |
| IP Rating | IP67 | IPX7 |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 4.2 | 5.3 |
| Dimensions | 7.2” x 2.9” (184 x 73 mm) | 7.9” x 3.6” x 2.1” (200 x 91 x 53 mm) |
| Drivers | 2x 2” active drivers + 2x 2” x 4” passive radiators | 60W: 2x 30mm drivers + passive radiators |
| TWS | Yes | Yes |
| EQ | Yes (via app) | Yes |
| Built-in Microphone | No | - |
| Maximum SPL | 87dB (Manufacturer specified) | - |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC | SBC, AAC |
| App | Yes (Ultimate Ears BOOM & MEGABOOM app) | Yes |
| Aux Input | No | No |
| Strap | Yes (built-in loop) | - |
| Bluetooth Latency | - | 400ms aac, 200ms sbc |
| Frequency Response | - | 50Hz - 20kHz (Manufacturer specified) |
| Amplifier Power | - | 25W |
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