SONY ULT FIELD 1 Bluetooth speaker, black (SRSULT10B.CE7)

Features
Loud sound in a lightweight package
Press the button, feel the bass
Anywhere, in any weather
Shock-resistant
All-day lasting battery

Measurements
Product depth (mm): 76
Product height (mm): 77
Product weight (g): 650
Product width (mm): 206

The Sony ULT FIELD 1 is a small and easily portable Bluetooth speaker that delivers surprisingly rich sound for its size. The speaker combines clear treble, strong bass, and a separate ULT mode that adds extra punch to the music at the push of a button. Its durable design, 12-hour battery life, and convenient carrying strap make it a reliable companion for home, travel, and outdoor use.

Small speaker, big sound

The Sony ULT FIELD 1 is the smallest and most portable speaker in the ULT POWER SOUND lineup, but it doesn’t hold back on sound. The speaker’s design includes one woofer, one tweeter, and two passive radiators that enhance bass reproduction. The result is detailed and powerful sound, suitable both for background music and more energetic listening.

ULT mode adds more bass and energy

The ULT button on top of the speaker takes the sound to a new level. When ULT mode is activated, the bass is emphasized, adding more depth, pressure, and energy to the sound. This feature is especially useful when you want a stronger and more rhythmic listening experience. ULT mode can also be toggled through the Sony Music Center app.

Ready to go almost anywhere

The ULT FIELD 1 is designed for on-the-go use. It weighs about 650 grams and is approximately 20.6 cm wide, making it easy to carry in a bag. The adjustable carrying strap makes it easy to carry and hang. The speaker can be used both horizontally and vertically, so it fits even in tight spaces.

Durable speaker for everyday and outdoor use

The IP67 rating means the speaker is water- and dust-resistant. Additionally, it is rustproof, saltwater-resistant, and shockproof. Sony has tested the design to withstand everyday bumps and scratches, making it well-suited for outdoor use, such as at the beach or on trips.

Long battery life and practical extra features

Up to 12 hours of battery life allows for extended listening without frequent charging. The speaker can also be used for hands-free calls, with Echo Cancelling technology to improve conversations. Bluetooth 5.3 and Fast Pair make pairing seamless, and two compatible ULT FIELD 1 speakers can be paired to create a stereo sound setup.

Features

• The Sony ULT FIELD 1 delivers powerful sound for its size using a woofer, tweeter, and two passive radiators.
• ULT mode enhances bass and adds energy to music with a single button press.
• The speaker is IP67 rated, making it resistant to water and dust and suitable for outdoor use.
• Shockproof and rustproof design adds peace of mind when on the move.
• Up to 12 hours of battery life enables long listening sessions on a single charge.
• Adjustable carrying strap makes it easy to transport and hang.
• The speaker can be used in both horizontal and vertical positions.
• Hands-free calls are supported with a built-in microphone and Echo Cancelling technology.
• Fast Pair makes pairing with Android devices easy.
• Stereo Pair function allows two compatible speakers to connect for stereo sound.

Package contents

• Sony ULT FIELD 1 Bluetooth speaker
• USB Type-C cable (A to C)
• Carrying strap
• User Registration Card
• Warranty Card
• Reference Guide

Technical specifications

• Model: Sony ULT FIELD 1 / SRS-ULT10
• Color: black
• Speaker elements: 1 x tweeter, 1 x woofer
• Tweeter size: approximately 16 mm
• Woofer size: approximately 83 x 42 mm
• Passive radiators: 2 pcs
• Maximum power: 20 W (woofer) / 10 W (tweeter)
• Bluetooth version: 5.3
• Bluetooth operating range: approximately 30 m
• Frequency band: 2.4 GHz
• Supported codecs: SBC, AAC
• Hands-free function: yes
• Google Fast Pair: yes
• Stereo Pair: yes
• Connection: USB Type-C, charging only
• Battery: internal Li-ion
• Battery capacity: 2900 mAh / 2700 mAh
• Battery life: approximately 12 h
• Charging time: approximately 5 h
• Protection class: IP67
• Dimensions: approximately 206 x 77 x 76 mm
• Weight: approximately 650 g
• Package dimensions: approximately 224 x 104 x 101 mm
• Package weight: approximately 840 g