Short answer: the Ultimate Ears Miniroll. It ranks #12 of 62 small speakers by sound quality, rated 3.9/5, at $49.99. The Xiaomi Mi Portable Mini ranks #51, rated 2.6/5, at $21.99, $28 cheaper, which does not close the gap in sound quality.
The Ultimate Ears Miniroll is the better-sounding pick. A waterproof strap on mini speaker with clear mids and highs, a warm balance, and a long battery for its size. It links with other speakers (PartyUp/Auracast, Miniroll-only), which the Xiaomi Mi Portable Mini cannot. The tradeoff: Bass does not reach as deep as the best-rated speakers.
The Xiaomi Mi Portable Mini is the lighter pick. A tiny, very cheap waterproof speaker with USB-C charging and stereo pairing with a second unit, easy to slip into any bag. At 0.4 lbs (185 g) it weighs noticeably less than the Ultimate Ears Miniroll at 0.6 lbs (279 g). Watch for: Not much bass, treble rolled off.
Buy the Ultimate Ears Miniroll. It is rated higher for sound quality, and the $28 you would save on the Xiaomi Mi Portable Mini does not close the gap.
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
| Ultimate Ears Miniroll | Xiaomi Mi Portable Mini | |
|---|---|---|
| Price | $49.99 | $21.99 |
| Ranked | #12 of 62 in Small Size Portable Bluetooth Speakers | #51 of 62 in Small Size Portable Bluetooth Speakers |
| App | No | No |
| Battery Life | 12 hours (Manufacturer specified) | 10 hours (Manufacturer specified) |
| EQ | No | No |
| IP Rating | IP67 | IP67 |
| Party Mode | Yes (PartyUp/Auracast, Miniroll-only) | No |
| Power Input | USB-C | USB-C |
| Stereo | No | No |
| Omnidirectional | Pointing up | Pointing up |
| Weight | 0.6 lbs (279 g) | 0.4 lbs (185 g) |
| Aux Input | No | No |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| Built-in Microphone | Yes | Yes |
| Power Bank | No | No |
| TWS | Yes | Yes |
| Dimensions | 4.8” x 4.1” x 1.9” (122.7 x 105 x 48.1 mm) | 3.4” x 3.4” x 1.8” (86 x 86 x 45 mm) |
| Charging Time | 2.3 hours | - |
| Drivers | 45.6mm active with passive radiator | 2x drivers (rare-earth magnet, long-fibre diaphragm) + passive radiator |
| Amplifier Power | 3W RMS | 4W |
| Maximum SPL | 83dB (Manufacturer specified) | - |
| Digital Aux Input | No | No |
| Bluetooth Version | 5.3 | 5.0 |
| Strap | Yes (built-in strap) | - |
| Battery Capacity | - | 2000mAh |
| Frequency Response | - | 200Hz - 15kHz (Manufacturer specified) |
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