Bose SoundLink Flex Portable Speaker (2nd Gen), Black vs Sony ULT FIELD 3 Wireless Portable Speaker, Black
Do you prefer the Flex 2’s hand-or-bag carry loop and orientation-aware tuning, or the ULT Field 3’s supplied shoulder strap, bass-toggle mode, and longer published battery estimate?
Products compared
ASIN B0D6WD2QSQ
Bose SoundLink Flex Portable Speaker (2nd Gen), Black
You want the documented nylon utility loop for hand carry or clipping to a bag; Bose lists a 1.3 lb body measuring 7.93 × 3.56 × 2.06 inches.
Last observed offer
$159.00
- Confirm offer eligibility on Amazon
Size: Regular
Price checked
Observed condition: new. Coupon and subscription requirements unverified.
ASIN B0DYB6KMJH
Sony ULT FIELD 3 Wireless Portable Speaker, Black
You prefer a supplied detachable shoulder strap for carrying the speaker across the body.
Last observed offer
$208.00
- Confirm offer eligibility on Amazon
Size: 10.1 x 3.1 x 4.5 inches
Price checked
Observed condition: new. Coupon and subscription requirements unverified.
Prices are per listed package. Pickoryx may earn a commission from qualifying purchases through the paid Amazon links on this page, at no added cost to you.
Published by Pickoryx · Published 2026-11-05 · Source checked 2026-11-05 16:44 UTC
The main trade-off
Bose emphasizes a compact loop-carry format and automatic orientation sensing; Sony gives you a supplied shoulder strap and a one-button bass-emphasis mode. Their stated battery figures use different conditions, and no controlled sound-quality winner is established.
Quick verdict
Pick by carry style and controls: Bose gives you a packable hand-or-bag format with PositionIQ, while Sony includes a shoulder strap and a button that emphasizes bass. Sony publishes a longer battery estimate, but the stated runtimes were measured under different conditions, so they do not establish a head-to-head runtime or sound winner.
Choose Bose SoundLink Flex Portable Speaker (2nd Gen), Black if
- You want the documented nylon utility loop for hand carry or clipping to a bag; Bose lists a 1.3 lb body measuring 7.93 × 3.56 × 2.06 inches.
- Automatic orientation sensing and Bose-app EQ adjustment are useful to your listening setup.
Choose Sony ULT FIELD 3 Wireless Portable Speaker, Black if
- You prefer a supplied detachable shoulder strap for carrying the speaker across the body.
- You want to toggle Sony’s bass-emphasis ULT mode on the speaker and use Sound Connect custom EQ.
When the recommendation changes
- You need a sound-pressure or sound-quality ranking from a controlled same-condition test; this page compares documented features only.
- Your volume, music, ambient temperature, EQ or battery-care settings differ from the manufacturers’ battery test conditions.
- You need a current, location-specific price comparison; this article does not assess current offers.
The differences that matter
| Decision point | Bose SoundLink Flex Portable Speaker (2nd Gen), Black | Sony ULT FIELD 3 Wireless Portable Speaker, Black |
|---|---|---|
| Carry Method And Packability | Bose lists a 1.3 lb body measuring 7.93 × 3.56 × 2.06 inches and a nylon utility loop for hand carry or clipping to a bag.[1] | Sony presents ULT FIELD 3 as a one-hand-carry speaker and includes a detachable shoulder strap; a dimensional/weight comparison is not made here.[2] |
What this changes: The choice is the carry method: a Bose utility loop for hand/bag carry or Sony’s supplied detachable shoulder strap. No quantified Sony size or weight comparison is established.[1, 2] The better fit depends on your priorities | ||
| Sound Controls And Positioning Features | Bose PositionIQ detects orientation and adjusts audio; the Bose app provides adjustable EQ.[1] | Sony’s ULT POWER SOUND mode emphasizes bass and can be switched with the physical ULT button; Sound Connect offers CUSTOM EQ and Sound Field Optimization. Sony notes Sound Field Optimization is disabled during Stereo Pair, Party Connect, and hands-free use.[4] |
What this changes: Position sensing and a physical bass toggle serve different preferences. They do not establish comparative sound quality or loudness.[1, 4] The better fit depends on your priorities | ||
| Published Battery Estimate And Water Dust Rating | Bose specifies up to 12 hours and documents the conditions for its battery figure: Bluetooth A2DP, 50% volume, default EQ, 20–25°C and no charging of external devices. Bose lists IP67.[1] | Sony specifies approximately 24 hours with Battery Care off, Bluetooth connected, volume 22 and ULT POWER SOUND enabled; approximately 5 hours at maximum volume with ULT enabled. Sony lists IP67 and says protection depends on closing the cap/port cover.[5, 2] |
What this changes: Use the stated runtimes only as manufacturer-specific estimates: volume, EQ, content and ambient temperature differ, so they do not establish a 2× comparative runtime. Both specify IP67 protection.[1, 5, 2] The better fit depends on your priorities | ||
Best for your routine
Clipping a portable speaker to a bag or moving it between hand carry and a packed bag
Best fit: Bose SoundLink Flex Portable Speaker (2nd Gen), Black
Based on listed features, not comparative testing.
Bose documents a nylon utility loop and hand-or-bag carry format. This is a carry-fit choice, not a measured size or sound advantage.
Carrying by an included shoulder strap and toggling a bass-emphasis mode at the speaker
Best fit: Sony ULT FIELD 3 Wireless Portable Speaker, Black
Based on listed features, not comparative testing.
Sony lists a supplied detachable shoulder strap and documents the physical ULT bass-emphasis toggle. It does not prove greater acoustic quality.
Choosing by the longer manufacturer-stated battery estimate
The better fit depends on your priorities
Sony publishes an approximately 24-hour estimate at volume 22 with ULT mode on; Bose publishes up to 12 hours at 50% volume and default EQ. Because conditions differ, this does not establish which lasts longer for your use; compare the stated settings with your expected playback.
Value and trade-offs
One or both observed offers have eligibility conditions, so no unrestricted price difference is shown.
This comparison does not assess current speaker prices or whether either model is worth a current premium.
This page does not assess current offers or price history, so it makes no price-timing recommendation.
Limitations
- Pickoryx did not conduct sound, loudness, or battery testing. The feature comparison uses manufacturer documentation.
- Sony dimensions and weight are not compared; carry guidance is limited to the manufacturer-documented one-hand carry format and supplied shoulder strap.
- Sony’s ULT FIELD 3 battery estimate is about 24 hours at volume 22 with ULT mode on, and about 5 hours at maximum volume; Bose states up to 12 hours and provides a separate 50%-volume/default-EQ test note. These are not equivalent conditions.
- Both manufacturers list IP67 protection; this does not establish equal impact resistance or identical handling limits. Sony requires the port cap to be closed for its stated water/dust protection.
- Current price and price history were not evaluated.
Methodology and sources
Confirmed the catalog ID and ASIN for each side, checked Sony’s ULT FIELD 3 / SRS-ULT30 model documentation and US model reference, then reviewed Bose’s black Flex 2 page and both manufacturers’ carry, tuning, protection and battery details. No sound-quality or like-for-like battery winner is inferred; no Sony dimensions or weight are compared.
This page summarizes published manufacturer product and support information; Pickoryx did not conduct sound or battery tests.
View 5 sources
- 1.Bose SoundLink Flex Portable Speaker (2nd Gen)Bose · Official specifications · Source checked 2026-11-05 16:44 UTC
Evidence used on this page
- Black selected; product details, box contents, technical specifications, portability, PositionIQ, app EQ and battery footnote (opened page lines 110–123, 351–380, 426–479, 533–585, 914).: Bose page identifies the black SoundLink Flex Portable Speaker (2nd Gen); lists 1.3 lb, 7.93 × 3.56 × 2.06 in, a nylon utility loop, IP67 and up to 12 hours. It describes PositionIQ and adjustable Bose-app EQ. Battery note states Bluetooth A2DP at 50% volume, 20–25°C, default EQ and no external-device charging.
- 2.ULT POWER SOUND series | ULT FIELD 3 Wireless Portable Speaker | BlackSony Electronics · Official specifications · Source checked 2026-11-05 16:44 UTC
Evidence used on this page
- Product title and Model ULT FIELD 3; Color Black; ULT, battery, IP67 and detachable strap cards; overview footnotes for battery conditions.: Sony’s US product page identifies the ULT FIELD 3 in Black, presents one-hand carry and a detachable shoulder strap, advertises ULT bass boost and IP67, and conditions its 24-hour battery estimate on ULT on and volume 22.
- 3.Sony Electronics – Post Malone Concert Sweepstakes - Official RulesSony Electronics · Official support · Source checked 2026-11-05 16:44 UTC
Evidence used on this page
- Section 5 Prizes, line 48: “Sony ULT FIELD 3 Wireless Portable Speaker (Model #: SRSULT30B)”.: Sony Electronics US identifies the ULT FIELD 3 Wireless Portable Speaker with model SRSULT30B; this bridges the catalog’s SRSULT30B.UC code to the official model family/base code. The source is used only for identity, not feature or offer evidence.
- 4.ULT FIELD 3 Help Guide: Enjoying switching the sound effectsSony · Official support · Source checked 2026-11-05 16:44 UTC
Evidence used on this page
- ULT bass toggle and definition; CUSTOM EQ and Sound Field Optimization; feature exclusions (lines 10–63).: Sony explains that ULT POWER SOUND emphasizes bass and can be toggled on the speaker or in Sound Connect; CUSTOM EQ is available in the app. Sound Field Optimization adapts to ambient noise, but Sony lists functions in which it is disabled.
- 5.ULT FIELD 3 Help Guide: Charging the speakerSony · Official support · Source checked 2026-11-05 16:44 UTC
Evidence used on this page
- Battery hours and exact measurement conditions (lines 93–136); cap closure and water/dust maintenance (lines 60–62).: Sony reports approximately 24 hours at volume 22 with ULT POWER SOUND and Battery Care off, and approximately 5 hours at maximum volume with ULT on. It says actual time varies with volume, songs, temperature and use. Sony instructs users to close the port cap to maintain water/dust protection.