Short answer: the Sony ULT Field 3. It ranks #75 of 175 medium speakers by sound quality (rated 3.4/5) at $208 and is still sold new; the Bose SoundLink Color II ranks #125 (rated 2.7/5) and is discontinued, so it is only an option used.
The Sony ULT Field 3 is the better-sounding, longer-running choice. IP67 rated, dustproof and water resistant. It is rated for 24 hours of battery against 8 for the Bose SoundLink Color II. It is rated IP67 against IPX4 for the Bose SoundLink Color II. It supports LDAC Bluetooth, which the Bose SoundLink Color II lacks. Watch for: Sounds a bit hollow, a bit boosted in the treble.
The Bose SoundLink Color II is the lighter option. Soft-touch rubber coating is comfortable to hold and tough enough for bumps and scrapes. At 1.3 lbs (600 g) it weighs much less than the Sony ULT Field 3 at 2.6 lbs (1.2 kg). Watch for: Boosted bass on Color II.
Buy the Sony ULT Field 3. It is rated higher for sound quality; the Bose SoundLink Color II is no longer sold new.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Sony ULT Field 3 | Bose SoundLink Color II | |
|---|---|---|
| Price | $208.00 | $139.00 Discontinued |
| Ranked | #75 of 175 in Medium Size Portable Bluetooth Speakers | #125 of 175 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Yes (Bose Connect) |
| Aux Input | No | No |
| Battery Life | 24 hours (Manufacturer specified) | 8 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC, AAC, LDAC | SBC, AAC |
| Bluetooth Version | 5.2 | 4.2 |
| Built-in Microphone | Yes | Yes |
| Dimensions | 10.1” x 4.4” x 3.1” (256 x 113 x 79 mm) | 5.2” x 5” x 2.2” (132 x 127 x 56 mm) |
| Drivers | 1x 20mm tweeter + 1x 86mm x 46mm woofer | 2x 40mm full-range drivers |
| EQ | Yes (App + ULT button) | No |
| IP Rating | IP67 | IPX4 |
| Party Mode | Yes (Party Connect up to 100 speakers) | Yes (Bose Party mode) |
| Power Bank | Yes (USB-C, 5V/1.5A) | No |
| Power Input | USB-C | Micro USB |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 2.6 lbs (1.2 kg) | 1.3 lbs (600 g) |
| Amplifier Power | 27W | - |
| Digital Aux Input | No | No |
| Strap | Yes (detachable shoulder strap) | - |
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Prices on this page were last checked October 12, 2026 at 4:13 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
Sony ULT Field 3: $208.00 Amazon $208.00 eBay
Older models: the Sony XB33 (ranked lower, rated 3.4/5), the Sony SRS-XE300 (ranked lower, rated 2.8/5), the Sony SRS-XB31 (ranked lower, rated 2.8/5) and the Sony SRS-XB30 (ranked lower, rated 2.6/5). See every Sony XB and ULT generation.
Same family: the Sony ULT Field 1 (smaller model, ranked lower, rated 3.1/5), the Sony ULT Field 7 (smaller model, rated 3.2/5), the Sony ULT Tower 10 (smaller model, rated 3.9/5), the Sony ULT Field 5 (larger model, rated 3.5/5), the Sony ULT Tower 5 (larger model, rated 4.5/5), the Sony ULT Tower 7 (larger model, rated 4.7/5), the Sony ULT Tower 9 (larger model, rated 4.2/5) and the Sony ULT Tower Max (larger model, rated 4.8/5).
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 →
| Released | Apr 2025 (1 year ago) |
|---|---|
| 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
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Bose SoundLink Color II: $139.00 Discontinued Amazon $139.00 eBay
Pros: Soft-touch rubber coating is comfortable to hold and tough enough for bumps and scrapes. IPX4 splashproof. Supports multipoint pairing to two devices at once.
Cons: Boosted bass on Color II. Not as deep of bass as other models. Lacking midrange detail. Rolled off treble. Discontinued.
Full Bose SoundLink Color II review and specifications →
| Released | May 2017 (9 years ago) |
|---|---|
| App | Yes (Bose Connect) |
| Aux Input | No |
| Battery Life | 8 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC, AAC |
| Bluetooth Version | 4.2 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 5.2” x 5” x 2.2” (132 x 127 x 56 mm) |
| Drivers | 2x 40mm full-range drivers |
| EQ | No |
| IP Rating | IPX4 |
| Omnidirectional | No |
| Party Mode | Yes (Bose Party mode) |
| Power Bank | No |
| Power Input | Micro USB |
| Stereo | Yes |
| TWS | Yes |
| Weight | 1.3 lbs (600 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Bose SoundLink Color II vs Marshall Emberton III
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