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Compact black portable speaker with detachable strap

Sony ULT FIELD 1 SRSULT10B.UC Portable Speaker, Black

SKU CH-83K2-3BMFG

Compact portable speaker with ULT bass boost, IP67 waterproofing, and 12-hour battery life

  • Product nameULT FIELD 1
  • Connection optionsBluetooth
  • Speaker categoryPortable Speaker
  • Spec summaryULT mode for more bass, compact design with detachable strap
  • Input sourcesBluetooth
  • Operating distance30 m
  • Deep bass on demand with ULT button
  • IP67 rated for water, dust and shock resistance
  • Detachable strap for easy carry anywhere
  • Up to 12 hours of continuous playback
  • Bluetooth range up to 30 metres

Compact portable speaker for on-the-go listening

The Sony ULT FIELD 1 is a new portable Bluetooth speaker finished in black. It targets users who want a rugged, single-unit audio device for travel, outdoor activities or casual home use. Its compact form and detachable strap make it easy to carry or hang wherever music is needed.

Fits a bag or strap mount with no cables required

Wireless Bluetooth connectivity provides a 30 meter operating range, so the speaker pairs directly with a phone or tablet without extra hardware. The IP67 rating means it withstands water, rust, dust and shock, freeing the owner from worrying about splashes, rain or rough handling. A built-in microphone adds hands-free call capability.

Runs up to 12 hours on a single charge

The active 1.0 channel system delivers 7.5 watts through a 1.7 inch woofer, with an ULT mode that boosts low frequencies when activated. Battery life reaches 12 hours at typical volumes, supporting extended sessions away from power. The Sound Diffusion Processor spreads audio evenly, while the sealed IP67 enclosure adds durability without active cooling noise.

How it compares

Measured against everything we stock in Bluetooth & Party Speakers, at today’s prices. Recalculated every night.

Price $100.99
Pricier than about 84% of the 862 comparable items (median $39.99).

Specifications

Product
Brand nameSony
Model nameSRSULT10B.UC
Part numberSRSULT10B.UC
Product nameULT FIELD 1
Product colorBlack
Audio & video
Speaker categoryPortable Speaker
Speaker setup1.0
AmplificationActive
Driver size1.7 in (4.32 cm)
Frequency response2.4 GHz
Connectivity
Connection optionsBluetooth
Operating distance30 m
Ports & slots
Input sourcesBluetooth
Power
Total wattage7.5 W
Size & build
Product dimensions96.0 in × 106.0 in × 224.0 in
Product weight1.43 lb (0.65 kg)

Questions about this item

How long will the 12-hour battery last when I keep ULT mode on all day?

The 12-hour rating is the maximum; using ULT mode continuously will reduce actual playtime below that figure.

Does the 7.5-watt amplifier make the speaker get hot or noisy after hours of playback?

The compact 1.7-inch driver and active 7.5-watt amp stay cool and silent during extended use; no fan is fitted.

My phone only has Bluetooth — is that the sole way to connect this speaker?

Yes, Bluetooth is the only input; the speaker pairs with any Bluetooth source within the 30-meter range.

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