Short answer: the Sony ULT Field 3 on measured sound quality, the Ultimate Ears Wonderboom 4 on price. The Sony ULT Field 3 ranks #57 of 136 medium speakers at $148. The Ultimate Ears Wonderboom 4 ranks #84 at $59.99, $88.01 cheaper.
What the Sony ULT Field 3 offers: 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. Watch for: 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.
What the Ultimate Ears Wonderboom 4 offers: Small size. Watch for: Bass isn’t as deep as the top-ranked speakers and is a little thuddy. Not much improvement over the previous Ultimate Ears Wonderboom 3 besides the USB-C charging port.
Buy the Sony ULT Field 3 if sound quality matters more than the price. Buy the Ultimate Ears Wonderboom 4 if the price matters more than sound quality.
Battery life favors the Sony ULT Field 3: rated for 24 hours against 14 hours for the Ultimate Ears Wonderboom 4.
Specifications Side By Side
| Sony ULT Field 3 | Ultimate Ears Wonderboom 4 | |
|---|---|---|
| Price | $148 | $59.99 |
| Ranked | #57 of 136 in Medium Size Portable Bluetooth Speakers | #84 of 136 in Medium Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | No | No |
| Battery Life | 24 hours (Manufacturer specified) | 14 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, LDAC | - |
| Bluetooth Version | 5.2 | 5.2 |
| Built in Microphone | Yes | No |
| Dimensions | 10.1" x 4.4" x 3.1" (256 x 113 x 79 mm) | 4.1" x 3.8" (104 x 95.3 mm) |
| Drivers | 1x 20mm tweeter + 1x 86mm x 46mm woofer | 2x 40mm active drivers + 2x passive radiators (46.1 x 65.2mm) |
| EQ | Yes (App + ULT button) | No |
| IP Rating | IP67 | IP67 |
| Party Mode | Yes (Party Connect up to 100 speakers) | No |
| Power Bank | Yes (USB-C, 5V/1.5A) | No |
| Power Input | USB-C | USB-C |
| Stereo | Yes | No |
| Omnidirectional | No | Yes |
| TWS | Yes | Yes |
| Weight | 2.6 lbs / 1.2 kg | 0.9 lbs / 420 g |
| Output Power | 27W | - |
| Digital Aux Input | No | No |
| Bass Extension (-10dB) | - | - |
| Bluetooth Latency | - | - |
| Max Volume | - | 87dB |
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Prices on this page were last checked August 27, 2026 at 10:09 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: $148 Amazon eBay
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 →
| App | Yes |
|---|---|
| Aux Input | No |
| Battery Life | 24 hours (Manufacturer specified) |
| 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 |
| Output Power | 27W |
| Party Mode | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes (USB-C, 5V/1.5A) |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 2.6 lbs / 1.2 kg |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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Ultimate Ears Wonderboom 4: $59.99 Amazon eBay
Pros: Small size.
Cons: Bass isn’t as deep as the top-ranked speakers and is a little thuddy. Not much improvement over the previous Ultimate Ears Wonderboom 3 besides the USB-C charging port.
Full Ultimate Ears Wonderboom 4 review and specifications →
| App | No |
|---|---|
| Aux Input | No |
| Bass Extension (-10dB) | |
| Battery Life | 14 hours (Manufacturer specified) |
| Bluetooth Latency | |
| Bluetooth Version | 5.2 |
| Built in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 4.1" x 3.8" (104 x 95.3 mm) |
| Drivers | 2x 40mm active drivers + 2x passive radiators (46.1 x 65.2mm) |
| EQ | No |
| IP Rating | IP67 |
| Max Volume | 87dB |
| Omnidirectional | Yes |
| Party Mode | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | No |
| TWS | Yes |
| Weight | 0.9 lbs / 420 g |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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