Short answer: the Sony ULT Field 3 if you need IP67 protection, the Bose Soundlink Mini 2 for a denser build. The Sony is IP67 rated, dustproof and water resistant, though it sounds a bit hollow and a bit boosted in the treble. The Mini 2 feels sturdy and dense in its compact aluminum body, but it has boosted upper bass like most Bose speakers.
Buy the Sony ULT Field 3 if you want one new; the Bose Soundlink Mini 2 is discontinued, so only look for it used.
If battery life is a priority, the Sony ULT Field 3 is rated for 24 hours versus 10 hours for the Bose Soundlink Mini 2.
Water resistance is not close: the Sony ULT Field 3 is rated at IP67 (brief submersion), well ahead of the Bose Soundlink Mini 2 at no water resistance.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Bose Soundlink Mini 2 | Sony ULT Field 3 | |
|---|---|---|
| Price | $182.99 Discontinued | $208.00 |
| Ranked | #62 of 151 in Medium Size Portable Bluetooth Speakers | #65 of 151 in Medium Size Portable Bluetooth Speakers |
| Aux Input | Yes | No |
| Bass Extension (-10dB) | ~58Hz | - |
| Battery Life | 10 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| IP Rating | None | IP67 |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| Weight | 1.5 lbs (680 g) | 2.6 lbs (1.2 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 4.2 | 5.2 |
| Drivers | 2x 33mm fullrange | 1x 20mm tweeter + 1x 86mm x 46mm woofer |
| Dimensions | 7.1” x 2” x 2.3” (180 x 51 x 58 mm) | 10.1” x 4.4” x 3.1” (256 x 113 x 79 mm) |
| Bluetooth Codecs | SBC | SBC, AAC, LDAC |
| Built-in Microphone | Yes | Yes |
| Power Input | Proprietary connector | USB-C |
| App | Yes (Bose Connect) | Yes |
| Digital Aux Input | No | No |
| TWS | Yes | Yes |
| EQ | No | Yes (App + ULT button) |
| Strap | No | Yes (detachable shoulder strap) |
| Party Mode | - | Yes (Party Connect up to 100 speakers) |
| Power Bank | - | Yes (USB-C, 5V/1.5A) |
| Amplifier Power | - | 27W |
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Prices on this page were last checked October 2, 2026 at 10:18 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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The Two Speakers In Full
Bose Soundlink Mini 2: $182.99 Discontinued Amazon eBay
Pros: Compact aluminum build feels sturdy and dense. ~10 hour battery life; can pair to two devices at once and remembers up to 8. Measured bass extension of ~58Hz (-10dB).
Cons: Boosted upper bass like most Bose speakers. Upper treble rolled off. Bass is 2db less boosted than the Mini. Bass doesn’t go as deep as others. Failures of the mainboard are common. Discontinued.
Full Bose Soundlink Mini 2 review and specifications →
| App | Yes (Bose Connect) |
|---|---|
| Aux Input | Yes |
| Bass Extension (-10dB) | ~58Hz |
| Battery Life | 10 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 4.2 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 7.1” x 2” x 2.3” (180 x 51 x 58 mm) |
| Drivers | 2x 33mm fullrange |
| EQ | No |
| IP Rating | None |
| Omnidirectional | No |
| Power Input | Proprietary connector |
| Stereo | Yes |
| Strap | No |
| TWS | Yes |
| Weight | 1.5 lbs (680 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Bose Soundlink Mini 2 vs Soundcore 3/Soundcore Select 2
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Sony ULT Field 3: $208.00 Amazon eBay
Older models: the Sony XB33 (ranked lower, rated 3.4/5), the Sony SRS-XE300 (ranked lower, rated 2.8/5) and the Sony SRS-XB30 (ranked lower, rated 2.6/5).
Pros: IP67 rated, dustproof and water resistant. 24 hour battery life. App with 10-band EQ. Party Connect with up to 100 speakers. USB-C in/out for charging your phone.
Cons: Sounds a bit hollow, a bit boosted in the treble. Custom EQ and the ULT bass-boost button can’t be used together: turning on ULT disables the EQ. Bass is very weak with ULT off. Lost to the JBL Charge 6 in a side-by-side comparison despite being the larger speaker.
Full Sony ULT Field 3 review and specifications →
| Amplifier Power | 27W |
|---|---|
| App | Yes |
| Aux Input | No |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Bluetooth Version | 5.2 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 10.1” x 4.4” x 3.1” (256 x 113 x 79 mm) |
| Drivers | 1x 20mm tweeter + 1x 86mm x 46mm woofer |
| EQ | Yes (App + ULT button) |
| IP Rating | IP67 |
| Omnidirectional | No |
| Party Mode | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes (USB-C, 5V/1.5A) |
| Power Input | USB-C |
| Stereo | Yes |
| Strap | Yes (detachable shoulder strap) |
| TWS | Yes |
| Weight | 2.6 lbs (1.2 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Sony ULT Field 3 vs Bose Soundlink Mini
- Sony ULT Field 3 vs Xiaomi Mi Portable
- Sony ULT Field 3 vs Sony XB33
- Sony ULT Field 3 vs Soundcore 3/Soundcore Select 2
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