Wireless speakers / Compare

Bose SoundLink Flex Portable Speaker (2nd Gen) vs Sony ULT FIELD 1

A

Product A: Bose

SoundLink Flex Portable Speaker (2nd Gen)

47 of 96 known

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B

Product B: Sony

ULT FIELD 1

49 of 96 known

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All 96 fields

Every value links to where we found it.

Only differences

ABose SoundLink Flex Portable Speaker (2nd Gen)

BSony ULT FIELD 1

General

5 of 8 differ

Series

SoundLink1Maker product pagebose.com/p/speakers/bose-soundlink-flex-portable-speaker-2nd-gen/SLFLXII-SPEAKERWIRELESS.htmlRead 8 October 2026

ULT POWER SOUND1Press releasesony.mediaroom.com/2024-04-11-Sony-Electronics-Introduces-ULT-POWER-SOUND-R-,-A-New-Series-of-Speakers-and-Headphones-to-bring-Massive-Bass-and-the-Ultimate-VibeRead 8 October 2026

Model numbersiMaker identifiers for this exact model and its listed variants. Excludes sibling models and other generations.

4425913Owner's manualassets.bosecreative.com/m/409c7c0457a61e44/original/891014_OG_SLFLXII-SPEAKERWIRELESS_en.pdfRead 8 October 2026Regulatory information, page 4: Model 442591.

SRS-ULT10, YY7862E4Owner's manualhelpguide.sony.net/speaker/7862/v1/en/print.pdfRead 8 October 2026

GTIN / EAN

Not available

Not available

AnnouncediThe maker's first announcement of this model. This is separate from first retail availability.

Not available

11 April 20241Press releasesony.mediaroom.com/2024-04-11-Sony-Electronics-Introduces-ULT-POWER-SOUND-R-,-A-New-Series-of-Speakers-and-Headphones-to-bring-Massive-Bass-and-the-Ultimate-VibeRead 8 October 2026

Status

Available1Maker product pagebose.com/p/speakers/bose-soundlink-flex-portable-speaker-2nd-gen/SLFLXII-SPEAKERWIRELESS.htmlRead 8 October 2026

Available2Maker product pageelectronics.sony.com/audio/speakers/wireless-speakers/p/srsult10-bRead 8 October 2026

PredecessoriThe model this one directly replaced, in the same line, tier and size, as the maker or a trusted review names it.

Bose SoundLink Flex Bluetooth Speaker5Reviewsoundguys.com/bose-soundlink-flex-2nd-gen-review-125253Read 8 October 2026SoundGuys calls the original Bose SoundLink Flex the predecessor of the SoundLink Flex (2nd Gen).

Not available

SuccessoriThe model that directly replaced this one, in the same line, tier and size. A revision such as a Slim or OLED model does not count when a next generation exists.

Not available

Not available

Launch price (US)iThe maker's US launch MSRP for the stated configuration, excluding tax. Current store prices and later discounts do not qualify.

Not available

$1291Press releasesony.mediaroom.com/2024-04-11-Sony-Electronics-Introduces-ULT-POWER-SOUND-R-,-A-New-Series-of-Speakers-and-Headphones-to-bring-Massive-Bass-and-the-Ultimate-VibeRead 8 October 2026US suggested retail price at launch, excluding tax.

Launch price (EU)iThe maker's euro launch price for the stated configuration, including VAT as published. Current store prices and later discounts do not qualify.

Not available

Not available

MarketsiISO country or region codes where this exact model or variant is sold. A source page's language does not establish availability.

US1Maker product pagebose.com/p/speakers/bose-soundlink-flex-portable-speaker-2nd-gen/SLFLXII-SPEAKERWIRELESS.htmlRead 8 October 2026

US, CA1Press releasesony.mediaroom.com/2024-04-11-Sony-Electronics-Introduces-ULT-POWER-SOUND-R-,-A-New-Series-of-Speakers-and-Headphones-to-bring-Massive-Bass-and-the-Ultimate-VibeRead 8 October 2026

ColoursiThe maker's own colour names

Black, Blue Dusk, Sandstone, Alpine Sage, Twilight Blue, Petal Pink, Citrus Yellow, Fog Grey, Dewdrop Mint1Maker product pagebose.com/p/speakers/bose-soundlink-flex-portable-speaker-2nd-gen/SLFLXII-SPEAKERWIRELESS.htmlRead 8 October 2026Current maker page explicitly offers Dewdrop Mint. Other listed colors come from the exact-model support specification.2Maker product pagesupport.bose.com/s/article/product-specifications-bose-soundlink-flex-portable-speaker-2nd-genRead 8 October 2026

Black, Forest Gray, Off White, Orange1Press releasesony.mediaroom.com/2024-04-11-Sony-Electronics-Introduces-ULT-POWER-SOUND-R-,-A-New-Series-of-Speakers-and-Headphones-to-bring-Massive-Bass-and-the-Ultimate-VibeRead 8 October 2026

Speaker typeiHome covers speakers made to stay in one place, including smart speakers. A speaker with Wi-Fi or a voice assistant can be of any type.

Portable1Maker product pagebose.com/p/speakers/bose-soundlink-flex-portable-speaker-2nd-gen/SLFLXII-SPEAKERWIRELESS.htmlRead 8 October 2026

Portable2Maker product pageelectronics.sony.com/audio/speakers/wireless-speakers/p/srsult10-bRead 8 October 2026

Audio

5 of 18 differ

Audio channelsiSound channels reproduced by one speaker. Pairing two speakers for stereo is separate.

Mono1Maker product pagebose.com/p/speakers/bose-soundlink-flex-portable-speaker-2nd-gen/SLFLXII-SPEAKERWIRELESS.htmlRead 8 October 2026

Mono6Reviewrtings.com/speaker/reviews/sony/ult-field-1Read 8 October 2026

Audio driversiPowered audio transducers in one speaker. Passive radiators are counted separately. Circular diameter and rectangular width and height have separate columns. Per-driver power must state continuous or RMS basis and battery or mains operation in the source note.

ABose SoundLink Flex Portable Speaker (2nd Gen)

Driver type	Count
Full-range	1

Source4Maker product pagesupport.bose.com/article/poor-sound-quality-from-product-soundlink-flex-portable-speaker-2nd-genRead 8 October 2026Exact second-generation support article: one active speaker and two passive radiators. Full-range role is also stated in product-page sound options.

BSony ULT FIELD 1

Driver type	Count	Diameter (mm)
Woofer	1	Not available
Tweeter	1	16

Source4Owner's manualhelpguide.sony.net/speaker/7862/v1/en/print.pdfRead 8 October 2026Specifications. Woofer rectangular dimensions have no axis labels and are omitted. Tweeter diameters are approximate.

Passive radiatorsiPassive, unpowered bass radiators. Excludes powered drivers.

24Maker product pagesupport.bose.com/article/poor-sound-quality-from-product-soundlink-flex-portable-speaker-2nd-genRead 8 October 2026

25Reviewsoundguys.com/sony-ult-field-1-review-113404Read 8 October 2026

Rated audio poweriMaker-published total rated continuous audio output. Battery power is used for portable speakers when mains and battery ratings differ. Peak marketing power is separate.

Not available

Not available

Rated audio power on mainsiTotal rated continuous audio output with external power. Store a separate battery rating when the maker publishes both.

Not available

Not available

Audio output power (unspecified rating)iMaker- or reviewer-published audio output power whose continuous or peak rating basis is not stated. This is separate from rated continuous output and explicitly published peak output.

Not available

Not available

Peak audio poweriExplicitly published peak audio output. Never substitute for rated continuous output.

Not available

Not available

Frequency response lower limit (claimed)iPublished acoustic frequency response limit. Tolerance and operating mode belong in the source note. The Bluetooth transmission range that some spec tables and retailers label Frequency Response, such as A2DP 20 to 20,000 Hz, is not stored.

Not available

Not available

Frequency response upper limit (claimed)iPublished acoustic frequency response limit. Tolerance and operating mode belong in the source note. The Bluetooth transmission range that some spec tables and retailers label Frequency Response, such as A2DP 20 to 20,000 Hz, is not stored.

Not available

Not available

Signal-to-noise ratio (claimed)

Not available

Not available

Adjustable equalizeriUser-adjustable frequency bands. Selecting fixed sound presets alone does not qualify.

Yes1Maker product pagebose.com/p/speakers/bose-soundlink-flex-portable-speaker-2nd-gen/SLFLXII-SPEAKERWIRELESS.htmlRead 8 October 2026

Yes4Owner's manualhelpguide.sony.net/speaker/7862/v1/en/print.pdfRead 8 October 2026

Equalizer bandsiNumber of user-adjustable frequency bands. Do not count sound presets.

35Reviewsoundguys.com/bose-soundlink-flex-2nd-gen-review-125253Read 8 October 2026Bose app offers Bass, Middle and Treble sliders.

33Maker product pagesony.com/electronics/support/speakers-wireless-speakers/srs-ult10/specificationsRead 8 October 2026

Automatic sound adjustmentiAdjusts audio to placement or playback conditions. Keep the named feature and conditions in the source note.

Yes1Maker product pagebose.com/p/speakers/bose-soundlink-flex-portable-speaker-2nd-gen/SLFLXII-SPEAKERWIRELESS.htmlRead 8 October 2026PositionIQ senses speaker orientation and adjusts playback. Standing, lying and hanging orientations are supported.

Not available

Sound modesiNamed playback modes. Battery extension modes are also qualified in battery source notes.

Not available

ULT POWER SOUND, Custom EQ, STAMINA4Owner's manualhelpguide.sony.net/speaker/7862/v1/en/print.pdfRead 8 October 2026STAMINA disables sound effects including ULT. No claimed STAMINA runtime is stated.

Wireless stereo pairingiTwo compatible speakers can play separate left and right channels.

Yes1Maker product pagebose.com/p/speakers/bose-soundlink-flex-portable-speaker-2nd-gen/SLFLXII-SPEAKERWIRELESS.htmlRead 8 October 2026Two identical SoundLink Flex (2nd Gen) speakers provide left and right channels. Party Mode can link different compatible current SoundLink models.

Yes4Owner's manualhelpguide.sony.net/speaker/7862/v1/en/print.pdfRead 8 October 2026

Speaker link protocolsiNamed systems for linking compatible speakers, such as PartyBoost, Auracast or Party Connect. Linking support does not establish compatibility across all models.

Bose Party Mode, Bose Stereo Mode, Bose SimpleSync1Maker product pagebose.com/p/speakers/bose-soundlink-flex-portable-speaker-2nd-gen/SLFLXII-SPEAKERWIRELESS.htmlRead 8 October 2026

Not available

Max linked speakersiPublished maximum in a speaker group. A stereo pair is recorded separately. A figure such as 100+ is stored as 100.

21Maker product pagebose.com/p/speakers/bose-soundlink-flex-portable-speaker-2nd-gen/SLFLXII-SPEAKERWIRELESS.htmlRead 8 October 2026Two speakers in Party or Stereo Mode. SimpleSync connects to a compatible Bose smart speaker or soundbar.

Not available

Max Bluetooth group speakersiPublished maximum speakers in one Bluetooth playback group, including the first speaker. Source notes name the compatible models or families, linking system and firmware requirements. Wi-Fi groups and concurrent Bluetooth source devices are excluded. A stereo pair alone does not establish the maximum when other Bluetooth linking systems are supported. A figure such as 100+ is stored as 100.

Not available

Not available

Connectivity

7 of 16 differ

Bluetooth audio playbackiPlays audio streamed over Bluetooth from a phone or other source. Bluetooth used only for setup or app control does not count.

Yes3Owner's manualassets.bosecreative.com/m/409c7c0457a61e44/original/891014_OG_SLFLXII-SPEAKERWIRELESS_en.pdfRead 8 October 2026

Yes4Owner's manualhelpguide.sony.net/speaker/7862/v1/en/print.pdfRead 8 October 2026

Bluetooth versioniVersion of the Bluetooth radio. Some Wi-Fi speakers use Bluetooth only for setup. See Bluetooth audio playback.

5.32Maker product pagesupport.bose.com/s/article/product-specifications-bose-soundlink-flex-portable-speaker-2nd-genRead 8 October 2026

5.34Owner's manualhelpguide.sony.net/speaker/7862/v1/en/print.pdfRead 8 October 2026About the BLUETOOTH wireless technology. FIELD 3 states version 5.2, despite the SoundGuys review stating 5.3.

Bluetooth codecsiExplicitly supported receive codecs. Bluetooth version alone does not establish codecs.

SBC, AAC, aptX Adaptive3Owner's manualassets.bosecreative.com/m/409c7c0457a61e44/original/891014_OG_SLFLXII-SPEAKERWIRELESS_en.pdfRead 8 October 2026Page 18 explicitly identifies aptX Adaptive with a compatible Snapdragon Sound source. SBC and AAC are corroborated by the exact-model SoundGuys review.

SBC, AAC4Owner's manualhelpguide.sony.net/speaker/7862/v1/en/print.pdfRead 8 October 2026

Bluetooth profiles

A2DP, AVRCP, BLE, HFP2Maker product pagesupport.bose.com/s/article/product-specifications-bose-soundlink-flex-portable-speaker-2nd-genRead 8 October 2026

A2DP, AVRCP, HFP, HSP, SPP3Maker product pagesony.com/electronics/support/speakers-wireless-speakers/srs-ult10/specificationsRead 8 October 2026

Bluetooth LE AudioiExplicit LE Audio support. Bluetooth LE for app control alone does not qualify.

Not available

Not available

AuracastiExplicit Auracast support. Sending, receiving and speaker-group roles belong in source notes.

Not available

Not available

MultipointiConcurrent Bluetooth source connections. Pairing memory and speaker-to-speaker linking do not qualify.

Yes1Maker product pagebose.com/p/speakers/bose-soundlink-flex-portable-speaker-2nd-gen/SLFLXII-SPEAKERWIRELESS.htmlRead 8 October 2026

Yes6Reviewrtings.com/speaker/reviews/sony/ult-field-1Read 8 October 2026Public verdict explicitly reports Bluetooth multi-device connectivity. Concurrent device count is not stated publicly.

Multipoint source devicesiMaximum concurrently connected Bluetooth source devices, not remembered pairings.

21Maker product pagebose.com/p/speakers/bose-soundlink-flex-portable-speaker-2nd-gen/SLFLXII-SPEAKERWIRELESS.htmlRead 8 October 2026

Not available

Bluetooth range (claimed)iMaker-claimed Bluetooth range to the source device. Test conditions belong in the source note.

Not available

30m4Owner's manualhelpguide.sony.net/speaker/7862/v1/en/print.pdfRead 8 October 2026About 30 m. Obstacles and radio interference reduce this distance.

Wi-FiiBuilt-in Wi-Fi, for audio streaming, setup or control.

No6Reviewrtings.com/speaker/reviews/bose/soundlink-flex-2nd-genRead 8 October 2026Public Wi-Fi test row explicitly says No. Member-only metrics were not used.

No6Reviewrtings.com/speaker/reviews/sony/ult-field-1Read 8 October 2026

Wi-Fi standardsiOne 802.11 name per item, such as 802.11ax. A Wi-Fi generation is written as its standard, so Wi-Fi 5 is 802.11ac and Wi-Fi 6 is 802.11ax. Older standards are listed only when a source names them.

Not available

Not available

Network audio protocolsiNamed systems that stream audio to the speaker over the home network. AirPlay is written as AirPlay 2. Chromecast built-in is written as Google Cast. Other names follow the maker, such as Spotify Connect.

Not available

Not available

USB audio inputiPlayback from a connected computer or phone through USB. Charging, service ports and USB flash-drive playback do not qualify.

Not available

No4Owner's manualhelpguide.sony.net/speaker/7862/v1/en/print.pdfRead 8 October 2026Parts and controls explicitly state that USB-C is not compatible with music playback.

USB drive playbackiPlayback of audio files on a connected USB storage device.

Not available

No4Owner's manualhelpguide.sony.net/speaker/7862/v1/en/print.pdfRead 8 October 2026The only USB port is documented as incompatible with music playback.

USB audio file formats

Not available

Not available

PortsiPhysical speaker connectors. Record charging, audio input, power output and service roles separately. A shared microphone and guitar jack is one port. A combo jack that takes XLR and 6.35 mm plugs is 6.35 mm audio, and the role names XLR. Optical is a TOSLINK digital audio socket.

ABose SoundLink Flex Portable Speaker (2nd Gen)

Not available

BSony ULT FIELD 1

Connector	Count	Role
USB-C	1	Charging input

Source4Owner's manualhelpguide.sony.net/speaker/7862/v1/en/print.pdfRead 8 October 2026

Controls and software

4 of 8 differ

SpeakerphoneiBuilt-in microphone and call support, through a connected phone or a voice assistant's calling. A microphone used only for voice commands does not count. Microphone inputs for karaoke are separate.

Yes1Maker product pagebose.com/p/speakers/bose-soundlink-flex-portable-speaker-2nd-gen/SLFLXII-SPEAKERWIRELESS.htmlRead 8 October 2026Standard non-SE SoundLink Flex (2nd Gen). Maker specifications exclude the later SE variant from microphone support. No SE variant is included.

Yes4Owner's manualhelpguide.sony.net/speaker/7862/v1/en/print.pdfRead 8 October 2026

Voice assistantsiVoice assistants explicitly usable through the speaker, such as Amazon Alexa, Google Assistant, Siri or Sonos Voice Control. State whether a connected phone is required.

Siri, Google Assistant6Reviewrtings.com/speaker/reviews/bose/soundlink-flex-2nd-genRead 8 October 2026Public Voice Assistant verdict explicitly supports the paired phone Siri or Google Assistant. No independent assistant on the speaker.

Google Assistant, Siri4Owner's manualhelpguide.sony.net/speaker/7862/v1/en/print.pdfRead 8 October 2026Uses the connected Android phone Google app or iPhone Siri. Button activation, not a standalone voice assistant.

Controls

Power, Bluetooth pairing, Volume up/down, Play/pause, Next/previous track, Programmable shortcut3Owner's manualassets.bosecreative.com/m/409c7c0457a61e44/original/891014_OG_SLFLXII-SPEAKERWIRELESS_en.pdfRead 8 October 2026Speaker Controls pages 19-23. Shortcut choices include linking, Spotify Tap or connected-phone voice assistant.

Power, Bluetooth pairing, Play/pause, Volume, ULT sound mode, Answer/end call, Phone voice assistant4Owner's manualhelpguide.sony.net/speaker/7862/v1/en/print.pdfRead 8 October 2026

Companion app

Bose app1Maker product pagebose.com/p/speakers/bose-soundlink-flex-portable-speaker-2nd-gen/SLFLXII-SPEAKERWIRELESS.htmlRead 8 October 2026

Sony | Sound Connect4Owner's manualhelpguide.sony.net/speaker/7862/v1/en/print.pdfRead 8 October 2026Sound Connect support since April 2025. Update through Sony | Music Center first.

App platforms

iOS, Android1Maker product pagebose.com/p/speakers/bose-soundlink-flex-portable-speaker-2nd-gen/SLFLXII-SPEAKERWIRELESS.htmlRead 8 October 2026

Android, iOS4Owner's manualhelpguide.sony.net/speaker/7862/v1/en/print.pdfRead 8 October 2026

User firmware updates

Yes3Owner's manualassets.bosecreative.com/m/409c7c0457a61e44/original/891014_OG_SLFLXII-SPEAKERWIRELESS_en.pdfRead 8 October 2026Care and Maintenance, Update the Speaker: Bose app OTA or Bose updater website.

Yes4Owner's manualhelpguide.sony.net/speaker/7862/v1/en/print.pdfRead 8 October 2026

Built-in lightingiDecorative or ambient lighting. Status, battery, connection and microphone indicator LEDs alone do not qualify.

Not available

Not available

Lighting modes

Not available

Not available

Smart home

None of 3 known

Matter controlleriCan add and control Matter devices. Being a Matter device alone does not count.

Not available

Not available

Thread border routeriConnects Thread smart home devices to the home network.

Not available

Not available

Zigbee hubiA built-in Zigbee radio that controls Zigbee smart home devices.

Not available

Not available

Battery and charging

3 of 17 differ

Built-in battery

Yes3Owner's manualassets.bosecreative.com/m/409c7c0457a61e44/original/891014_OG_SLFLXII-SPEAKERWIRELESS_en.pdfRead 8 October 2026

Yes4Owner's manualhelpguide.sony.net/speaker/7862/v1/en/print.pdfRead 8 October 2026

Playback time (claimed)iMaximum maker-claimed music playback on one charge in normal playback mode. Battery extension or reduced-bass boost modes belong in battery_life_boost_h. Record volume and lighting conditions in the source note.

12h3Owner's manualassets.bosecreative.com/m/409c7c0457a61e44/original/891014_OG_SLFLXII-SPEAKERWIRELESS_en.pdfRead 8 October 2026Page 25: up to 12 hours using Bluetooth A2DP at 50% volume, default EQ, Top 50 Global February 2024 tracks, 20-25 C. At maximum volume Bose specifies up to three hours.

12h4Owner's manualhelpguide.sony.net/speaker/7862/v1/en/print.pdfRead 8 October 2026Charging the speaker, pp. 9-10. Approximate 12 h at volume 25/50 with ULT POWER SOUND on. At maximum volume the claim is 3 h.

Playback with battery extension (claimed)iTotal claimed runtime with the named battery extension mode enabled. Store the total, not only the extra hours. Keep sound and lighting restrictions in the source note.

Not available

Not available

Battery energyiPublished battery pack energy. Do not calculate from an assumed voltage.

Not available

Not available

Battery capacityiPublished pack capacity at the voltage in battery_voltage_v. Do not substitute power-bank output capacity. A figure written per cell, such as 5000mAh*2, is not a pack capacity unless the maker states the pack figure.

Not available

Not available

Nominal battery voltage

Not available

Not available

Battery chemistry

Lithium-ion2Maker product pagesupport.bose.com/s/article/product-specifications-bose-soundlink-flex-portable-speaker-2nd-genRead 8 October 2026

Lithium-ion4Owner's manualhelpguide.sony.net/speaker/7862/v1/en/print.pdfRead 8 October 2026

User-replaceable batteryiBattery that the maker documents as replaceable by the user. Service replacement does not qualify.

Not available

Not available

Full charge timeiTime from discharged to full under the maker conditions. Adapter rating and simultaneous use belong in source notes.

4h3Owner's manualassets.bosecreative.com/m/409c7c0457a61e44/original/891014_OG_SLFLXII-SPEAKERWIRELESS_en.pdfRead 8 October 2026Page 25: up to four hours from 0 to 100% in standby, 5 V/1.5 A (7.5 W) USB-A supply.

5h4Owner's manualhelpguide.sony.net/speaker/7862/v1/en/print.pdfRead 8 October 2026Charging the speaker, p. 9. About 5 h from empty to full, speaker off, using 1.5 A adapter. Supplied cable is rated 1.5 A. A 3 A adapter and cable reduce charging time.

Quick charge duration

Not available

Not available

Playback after quick chargeiClaimed music playback after quick_charge_min of charging. Source conditions apply.

Not available

Not available

Charging input ratingiPublished speaker input voltage and current. An adapter rating alone does not establish device input.

5 V DC, 1.5 A3Owner's manualassets.bosecreative.com/m/409c7c0457a61e44/original/891014_OG_SLFLXII-SPEAKERWIRELESS_en.pdfRead 8 October 2026Regulatory information, page 4: Input Rating 5 V DC, 1.5 A. This is device input, separate from adapter output.

5 V DC, 3 A4Owner's manualhelpguide.sony.net/speaker/7862/v1/en/print.pdfRead 8 October 2026

Max charging inputiPublished maximum charging input. USB audio power requirements and adapter output are separate.

Not available

Not available

USB Power Delivery charging

Not available

Not available

Charges other devices

No1Maker product pagebose.com/p/speakers/bose-soundlink-flex-portable-speaker-2nd-gen/SLFLXII-SPEAKERWIRELESS.htmlRead 8 October 2026Maker comparison table: Charging Out No.

Not available

Max power-bank outputiPublished power delivered by the speaker to another device. Output voltage and current belong in the source note.

Not available

Not available

Wireless chargingiThe speaker battery can be charged wirelessly. Wireless power output to another device is separate.

Not available

Not available

Durability

2 of 5 differ

Dust and water ratingiExact published IP rating. Keep separate ratings, such as IP68 and IP69, as separate entries.

IP671Maker product pagebose.com/p/speakers/bose-soundlink-flex-portable-speaker-2nd-gen/SLFLXII-SPEAKERWIRELESS.htmlRead 8 October 2026

IP673Maker product pagesony.com/electronics/support/speakers-wireless-speakers/srs-ult10/specificationsRead 8 October 2026Requires the cap to be securely closed. Accessories and exposed connectors are not water or dust resistant.

Floats

Yes1Maker product pagebose.com/p/speakers/bose-soundlink-flex-portable-speaker-2nd-gen/SLFLXII-SPEAKERWIRELESS.htmlRead 8 October 2026

Yes6Reviewrtings.com/speaker/reviews/sony/ult-field-1Read 8 October 2026Public comparison with JBL Flip7 states RTINGS found FIELD 1 floats.

Drop resistanceiExplicit maker claim or defined drop test. Do not infer from rugged wording.

Yes1Maker product pagebose.com/p/speakers/bose-soundlink-flex-portable-speaker-2nd-gen/SLFLXII-SPEAKERWIRELESS.htmlRead 8 October 2026

Yes8Maker product pageelectronics.sony.com/audio/speakers/wireless-speakers/p/srsult10-bRead 8 October 2026

Drop test heightiMaker-published tested height. Surface and conditions belong in source notes.

Not available

1.22m8Maker product pageelectronics.sony.com/audio/speakers/wireless-speakers/p/srsult10-bRead 8 October 2026Footnote 2. MIL-STD 810H Method 516.8-Shock, 1.22 m onto plywood 5 cm thick. Does not guarantee damage-free drops or retention of IP performance.

Carry featuresiPublished handles, straps, carabiners or wheels.

Nylon utility loop1Maker product pagebose.com/p/speakers/bose-soundlink-flex-portable-speaker-2nd-gen/SLFLXII-SPEAKERWIRELESS.htmlRead 8 October 2026

Adjustable multi-way strap2Maker product pageelectronics.sony.com/audio/speakers/wireless-speakers/p/srsult10-bRead 8 October 2026

Measured

1 of 6 differ

Playback time (measured)iReviewer-measured playback per charge. Volume, lighting, sound mode, firmware and connection belong in the source note.

7.05h5Reviewsoundguys.com/bose-soundlink-flex-2nd-gen-review-125253Read 8 October 2026Exact SoundLink Flex (2nd Gen) review: 7 h 3 min. Looping music at 80 dB from one meter. Firmware 4.3.30, Bose app 10.3.13. Volume is higher than the maker 50% runtime test.

28.75h7Measurementsoundguys.com/sony-ult-field-1-review-113404Read 8 October 2026Battery test section. SoundGuys measured 28 h 45 min with ULT off, compared with Sony 12 h claim with ULT on. Test volume, firmware and codec are not stated. These are different sound modes and cannot be compared directly.

Max sound pressure (measured)iReviewer-measured maximum SPL. Distance, test method and power source belong in source notes.

Not available

Not available

Low-frequency extension (measured)iReviewer-measured low-frequency limit. Threshold and test method belong in source notes.

Not available

Not available

High-frequency extension (measured)iReviewer-measured high-frequency limit. Threshold and test method belong in source notes.

Not available

Not available

Audio latency (measured)iReviewer-measured source-to-speaker latency. Source device, app, codec, firmware and connection belong in source notes. App compensation may affect results.

Not available

Not available

Full charge time (measured)iReviewer-measured time from empty to full. Power adapter and method belong in the source note.

Not available

Not available

Dimensions and weight

3 of 3 differ

DimensionsiSpeaker body width, height and depth on explicitly identified axes. Unlabeled tuples do not establish axis meanings. Handle, strap and orientation conditions belong in the source note.

Not available

Width206Height77Depth76mm(8.1 × 3 × 3 in)4Owner's manualhelpguide.sony.net/speaker/7862/v1/en/print.pdfRead 8 October 2026Specifications. Approximate W × H × D, including projecting parts and controls.

WeightiSpeaker mass including its battery. Excludes packaging, charger and removable carry accessories unless the source states otherwise.

590g(1.3 lb)7Maker product pagebose.de/p/speakers/bose-soundlink-flex-portable-speaker-2nd-gen/SLFLXII-SPEAKERWIRELESS.htmlRead 8 October 2026Technical specifications: complete product system 0.59 kg. Convert published metric value to grams. H/D axes are conflicting between US product sections and are omitted.

650g(1.4 lb)4Owner's manualhelpguide.sony.net/speaker/7862/v1/en/print.pdfRead 8 October 2026Specifications. Approximate mass including battery.

Body materials

Aluminum, Fabric, Nylon, Plastic, Silicone, Steel1Maker product pagebose.com/p/speakers/bose-soundlink-flex-portable-speaker-2nd-gen/SLFLXII-SPEAKERWIRELESS.htmlRead 8 October 2026

Fabric grille, Rubberized plastic end caps5Reviewsoundguys.com/sony-ult-field-1-review-113404Read 8 October 2026

Certifications

None of 1 known

FCC IDs

Not available

Not available

Other certifications

Not available

Not available

In the box

1 of 1 differ

In the box

SoundLink Flex Portable Speaker (2nd Gen), USB-C to USB-A cable, Safety sheet1Maker product pagebose.com/p/speakers/bose-soundlink-flex-portable-speaker-2nd-gen/SLFLXII-SPEAKERWIRELESS.htmlRead 8 October 2026

Speaker, USB-A to USB-C cable, Strap3Maker product pagesony.com/electronics/support/speakers-wireless-speakers/srs-ult10/specificationsRead 8 October 2026

Links

Not compared

Product page

www.bose.com/p/speakers/bose-soundlink-flex-portable-speaker-2nd-gen/SLFLXII-SPEAKERWIRELESS.html1Maker product pagebose.com/p/speakers/bose-soundlink-flex-portable-speaker-2nd-gen/SLFLXII-SPEAKERWIRELESS.htmlRead 8 October 2026

electronics.sony.com/audio/speakers/wireless-speakers/p/srsult10-b2Maker product pageelectronics.sony.com/audio/speakers/wireless-speakers/p/srsult10-bRead 8 October 2026

Spec sheet

support.bose.com/s/article/product-specifications-bose-soundlink-flex-portable-speaker-2nd-gen2Maker product pagesupport.bose.com/s/article/product-specifications-bose-soundlink-flex-portable-speaker-2nd-genRead 8 October 2026Exact second-generation manufacturer support specification page. SE microphone exception explicitly identified. Non-SE reference model.

www.sony.com/electronics/support/speakers-wireless-speakers/srs-ult10/specifications3Maker product pagesony.com/electronics/support/speakers-wireless-speakers/srs-ult10/specificationsRead 8 October 2026

Manual

assets.bosecreative.com/m/409c7c0457a61e44/original/891014_OG_SLFLXII-SPEAKERWIRELESS_en.pdf3Owner's manualassets.bosecreative.com/m/409c7c0457a61e44/original/891014_OG_SLFLXII-SPEAKERWIRELESS_en.pdfRead 8 October 2026

helpguide.sony.net/speaker/7862/v1/en/print.pdf4Owner's manualhelpguide.sony.net/speaker/7862/v1/en/print.pdfRead 8 October 2026

EPREL registration numberiId in the EU energy label database. Each size or model of a series has its own id, so it is per variant.

Not available

Not available

Warranty

1 of 1 differ

Manufacturer warranty (source market)iThe maker's warranty period for the exact SKU or configuration and market named in the source note. It applies only to that stated market, not every regional variant. Statutory consumer rights are excluded. The base term is stored. An extension that needs registration goes in the source note.

1year1Maker product pagebose.com/p/speakers/bose-soundlink-flex-portable-speaker-2nd-gen/SLFLXII-SPEAKERWIRELESS.htmlRead 8 October 2026US maker page: included one-year Bose limited warranty. BoseCare paid extensions are excluded.

Not available

Both are also in the API. Back to all wireless speakers.