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The short answer
Sony ULT FIELD 3 wins this comparison. Choose it if a longer advertised playtime matters. Sony ULT FIELD 3 advertises up to 24 hours, versus up to 14 hours for Ultimate Ears WONDERBOOM 4.
Ultimate Ears
A small poolside speaker that floats, with 360° playback and up to 14 hours of battery life. Outdoor Boost and Podcast Mode cover music outside and spoken audio.
Bettr Score
63.8/100
Sony
Press the ULT button for a bass boost, then carry it by the included shoulder strap. IP67 protection, phone charging and up to 24 hours of playtime suit days out.
Bettr Score
68.8/100
| Ultimate Ears WONDERBOOM 4 | Specification | Sony ULT FIELD 3 |
|---|---|---|
$99.99 ✓ Winner | Reference price | $209.99 |
14 hours | Advertised battery life | 24 hours ✓ Winner |
14.82 oz ✓ Winner | Weight | 2.65 lb |
IP67 | Ingress protectionTie | IP67 |
4 | Durability tierTie | 4 |
5.2 | Bluetooth versionTie | 5.2 |
No | Can charge another device | Yes ✓ Winner |
No | USB audio inputNot enough data | Not stated / not applicable |
No | Auracast or compatible broadcast pairingNot enough data | Not stated / not applicable |
Yes | Floats in waterNot enough data | Not stated / not applicable |
No | Speakerphone | Yes ✓ Winner |
The buying advice
Choose Ultimate Ears WONDERBOOM 4 if you want less weight in your bag. Ultimate Ears WONDERBOOM 4 weighs 14.82 oz versus 2.65 lb — 1.72 lb less to carry.
Choose Sony ULT FIELD 3 if a longer advertised playtime matters. Sony ULT FIELD 3 advertises up to 24 hours, versus up to 14 hours for Ultimate Ears WONDERBOOM 4.
Ultimate Ears WONDERBOOM 4 weighs 14.82 oz versus 2.65 lb — 1.72 lb less to carry. Sony ULT FIELD 3 advertises up to 24 hours, versus up to 14 hours for Ultimate Ears WONDERBOOM 4. The recorded reference-price difference is $110.00.
Ultimate Ears WONDERBOOM 4 weighs 14.82 oz versus 2.65 lb — 1.72 lb less to carry.
Sony ULT FIELD 3 advertises up to 24 hours, versus up to 14 hours for Ultimate Ears WONDERBOOM 4.
Sony ULT FIELD 3 can charge another device from its battery; the other speaker’s verified specification says it cannot. Charging a phone uses some of the speaker’s battery.
Ultimate Ears WONDERBOOM 4 has the lower recorded reference price: $99.99 versus $209.99, a $110.00 difference.
People's Pick
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eBay — New
In stock · checked Oct 30, 2026
Price needs rechecking. Confirm at the retailer.
$58.49
Item + shipping · before tax
$58.49 + $0.00 shipping
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eBay — New
In stock · checked Oct 30, 2026
Price needs rechecking. Confirm at the retailer.
$100.00
Item price · shipping unknown
We may earn a commission when you buy through links marked “Affiliate link.” This does not change your price or our scores. How we earn
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