- Battery Life
- Up to 12 hours (Sony rating)
- Charge Time
- About 5 hours at 7.5 W over USB-C (Sony rating)
- Water and Dust Rating
- IP67, and Sony also claims salt water resistance
- Dimensions
- Approx. 206 x 77 x 76 mm
- Bluetooth
- 5.3
- Drivers
- One woofer and one tweeter
- Extras
- ULT bass boost button, detachable strap included
Sony
Sony ULT Field 1
Sony's compact rugged Bluetooth speaker with a bass-boost button, for buyers who want a name-brand outdoor speaker at a sale price.
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All prices
| Store | Price | Checked | |
|---|---|---|---|
| Best Buy Best price | $78 | ✓ AUG 28 | Go to store |
| Target | $98 | ✓ AUG 28 | Go to store |
Prices were checked on the dates shown and can change at any time. The store page is always authoritative. Shipping and taxes are not included.
First verified Aug 28, 2026. When a later check finds a different price, it gets logged here.
Our verdict
Where it wins
- IP67 dust and water rating, with a salt water resistance claim that most rivals do not make
- Street prices run far below list, 98 dollars at Target and about 78 at Best Buy in late August 2026
- Ships with a detachable strap for hanging it off a bag or handlebar
Where it loses
- Charging is slow, about 5 hours per Sony, limited by the 7.5 W input
- Single woofer and tweeter, so one unit gives no stereo separation
- At its full price near 130 to 138 dollars it is easy to beat; it mainly makes sense on sale
The ULT Field 1 is Sony's answer to the JBL Flip line, with the same rugged outdoor pitch plus a one-press ULT bass boost. With retailers currently selling it 30 to 50 dollars under the Flip 7, it is the better deal for most casual listeners. Skip it if you want fast charging or plan to pay full list price.
Also in bluetooth speakers
Anker Soundcore Motion 300
Anker's budget mid-size Bluetooth speaker with hi-res LDAC codec support, for listeners who want stereo drivers and app EQ under 80 dollars.
Bose SoundLink Flex (2nd Gen)
Bose's flat, rugged portable Bluetooth speaker, aimed at people who want fuller sound than a cylinder speaker and a built-in speakerphone.
JBL Flip 7
JBL's seventh-generation cylinder speaker, a mid-size portable Bluetooth speaker for outdoor and around-the-house listening.
Common questions
What does the ULT button do?
It toggles Sony's bass enhancement mode, which boosts low frequencies. It is a sound-profile switch, not a separate speaker mode.
Can it handle the beach or a pool?
Sony rates it IP67 for dust and water immersion and additionally claims salt water resistance, so beach and poolside use is within its rating.
How does it compare with the JBL Flip 7?
The Flip 7 carries a higher IP68 rating, a drop rating and a longer claimed battery, but typically costs 30 to 50 dollars more at current prices. The Sony counters with its bass boost button, strap and lower street price.
Prices last verified Aug 28, 2026.