Overview

The Sony ULT Field 1 is a compact, rugged, and affordable Bluetooth speaker designed for outdoor use. It’s fully dustproof and waterproof certified to IP67 and offers a solid mix of durability, portability, and excellent sound quality for its low price point.

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Sound Quality

• Bass & Clarity: The ULT Field 1 delivers enhanced bass quality Sony’s proprietory technology.
• Mids & Highs: Vocals and instruments are clear, making it suitable for pop, acoustic, and podcasts
• EQ Customization: You can tweak the sound using the Sony Music Center app, which includes a graphic equalizer and full control.

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Design & Build

• Shape & Size: Cylindrical design, lightweight (650g), and available in multiple colours 
• Durability: IP67-rated — dustproof, waterproof, and even saltwater-resistant and shockproof. Ideal for beach trips, camping, and poolside use 
• Portability: Includes a lanyard loop/carry handle for easy hanging or carrying 

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Features & Connectivity

• Bluetooth: Stable connection with low latency
• Battery Life: Up to 12 hours, 10 hours in ULT mode
• Charging: Charge or power directly via USB-C port
• Party Mode & Stereo Pairing: Can link with up to 100 other Sony speakers for a party setup 
• Voice Assistant & Speakerphone: Supports voice assistant via paired device and has speakerphone functionality with echo cancelling for improved call quality

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Main Features

• Rugged and portable
• Power by USB-C via built in rechargeable battery
• Excellent sound quality which defies it's size
• Waterproof and dustproof to IP67
• Customizable EQ and Extra Bass
• Full control via Sony Music Centre app
• Low battery warning
• Stereo pairing (when linked with similar Sony speaker) and Party Mode
• Colour: White (we'd call it a light grey!)

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Summary

The Sony SRS-ULT10 (ULT Field 1) is a great choice for those seeking a durable, portable, and affordable Bluetooth speaker with decent sound quality. Perfect for casual outdoor use, travel, and small gatherings.

Specification

Size 206 x 77 x 77mm approx.
Weight 650g
50 Volume Steps
Custom Equaliser via app
Hands Free speakerphone function
Bluetooth® Version: 5.3
Sound Profiles: A2DP, AVRCP, HFP, HSP, SPP
Stereo sound when paired with similar speaker
Frequency Transmission Range: 20 - 20,000 Hz, 44.1kHz sampling
Frequency Range: 2.4GHz
Charge Terminal: USB-C
Battery Life: Up to 12 hour, internal rechargeable
Power consumption: Approx 7.5w (at %V, 1.5A)
Water Protection: IP67
Item No: SRS-ULT10