---
product_id: 621697684
title: "ULT FIELD 7 - Wireless Bluetooth Portable Speaker with ULT POWER SOUND, Ultimate Deep BASS, X Balanced Speaker, 30 HR Battery, IP67, Waterproof, LED Lighting, Mic, Guitar Input - Black"
brand: "sony"
price: "¥139926"
currency: JPY
in_stock: true
reviews_count: 13
category: "Sony"
url: https://www.desertcart.jp/products/621697684-ult-field-7-wireless-bluetooth-portable-speaker-with-ult-power
store_origin: JP
region: Japan
---

# IP67 waterproof, dustproof & rustproof for all-weather use 2 x X-Balanced Speaker Units for rich stereo sound 30-hour battery life with 10-min quick charge = 3 hrs playback ULT FIELD 7 - Wireless Bluetooth Portable Speaker with ULT POWER SOUND, Ultimate Deep BASS, X Balanced Speaker, 30 HR Battery, IP67, Waterproof, LED Lighting, Mic, Guitar Input - Black

**Brand:** sony
**Price:** ¥139926
**Availability:** ✅ In Stock

## Summary

> 🎶 Own the vibe, anywhere, anytime with ULT FIELD 7’s powerhouse sound & unstoppable battery!

## Quick Answers

- **What is this?** ULT FIELD 7 - Wireless Bluetooth Portable Speaker with ULT POWER SOUND, Ultimate Deep BASS, X Balanced Speaker, 30 HR Battery, IP67, Waterproof, LED Lighting, Mic, Guitar Input - Black by sony
- **How much does it cost?** ¥139926 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/621697684-ult-field-7-wireless-bluetooth-portable-speaker-with-ult-power)

## Best For

- sony enthusiasts

## Why This Product

- Trusted sony brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Dynamic ULT Sound Modes:** Switch between Deep Bass and Attack Bass modes to customize your vibe and energize any playlist or crowd.
- • **Adaptive Sound Field Optimisation:** Automatically tunes audio to your environment, ensuring crystal-clear sound even in noisy or outdoor settings.
- • **ULT POWER SOUND, Unmatched Bass Impact:** Dual X-Balanced speakers, tweeters & passive radiators deliver deep, distortion-free bass that commands attention.
- • **Weatherproof & Portable with LED Ambience:** IP67-rated rugged design with carry handles and beat-synced LED lighting to elevate your outdoor or indoor experience.
- • **Epic 30-Hour Battery Life + Rapid Recharge:** Keep the party going all day and night with a massive battery and lightning-fast 10-minute quick charge.

## Overview

The Sony ULT FIELD 7 is a premium wireless Bluetooth speaker engineered for professionals who demand superior sound quality and durability. Featuring dual X-Balanced speaker units, tweeters, and passive radiators, it delivers deep bass and crystal-clear audio even at max volume. Its adaptive Sound Field Optimisation ensures clarity in noisy environments, while the 30-hour battery life with quick charge keeps your music uninterrupted. IP67 waterproof and dustproof, with customizable LED lighting and versatile inputs including mic and guitar, this speaker is built for both work and play, indoors or outdoors.

## Description

From the manufacturer Powerful sound, ultimate bass​ With two, powerful X-Balanced Speaker Units, the ULT FIELD 7 delivers uncompromised Sony sound quality with superior sound pressure, deep bass, and vocal clarity, even at max volume.​ ULT Product Video Hit the button, feel the bass​ The ULT button activates two new sound modes - Deep Bass adds weight to those vibey lower frequencies, and Attack Bass creates surging sound pressure and energy that will get everyone moving. Use these to satisfy your bassline addiction, tailoring the sound to suit your preferences, and bringing out the best in your favourite genre.​ Ultimate sound, all day and night​ Enjoy 30-hour battery power. Quick charging provides 3 hours of playback from a 10-minute charge.​ Anywhere, any weather Waterproof, dustproof, and rustproof, with two carry handles for easy transport.​ LED lighting to set the scene​ Multi-coloured lights sync to the beat. Choose colours and patterns in the Sony | Music Center app.​ Create even bigger sound​ Wirelessly connect to up to 100 compatible Sony speakers for synchronised sound and lighting. ​ Clear sound, even in noisy environments Our Sound Field Optimisation technology analyses the environment and adapts the audio to overcome noise in the room. That means every track is clear and detailed on this Bluetooth speaker, even in a room full of people, or outdoors in the elements. ULT button Press once for Deep Bass, which adds weight to those vibey lower frequencies. Press twice for Attack Bass, which creates surging sound pressure and energy to get everyone moving. ULT button Press once for Deep Bass, which adds weight to those vibey lower frequencies. Press twice for Attack Bass, which creates surging sound pressure and energy to get everyone moving. Waterproof, dustproof, and rustproof This portable speaker is IP67 rated, so no need to worry about the weather or any accidental spills. Waterproof, dustproof, and rustproof This portable speaker is IP67 rated, so no need to worry about the weather or any accidental spills. LED lighting Surrounding the passive radiators on each side of the speaker, multi-coloured lights automatically sync with the beat. Use the Sony | Music Centre app to switch colours, patterns, or turn them on/off. LED lighting Surrounding the passive radiators on each side of the speaker, multi-coloured lights automatically sync with the beat. Use the Sony | Music Centre app to switch colours, patterns, or turn them on/off. Superior sound quality, even at max volume Two powerful X-Balanced speakers deliver high sound pressure with less distortion, two high-quality tweeters add detail and lyrical clarity, and two passive radiators enhance lower frequencies. Superior sound quality, even at max volume Two powerful X-Balanced speakers deliver high sound pressure with less distortion, two high-quality tweeters add detail and lyrical clarity, and two passive radiators enhance lower frequencies. Sound Field Optimisation The ULT FIELD 7 automatically analyses your environment and adapts the audio to overcome surrounding noise. This keeps every track clear and detailed, even in a room full of people, or outdoors. Sound Field Optimisation The ULT FIELD 7 automatically analyses your environment and adapts the audio to overcome surrounding noise. This keeps every track clear and detailed, even in a room full of people, or outdoors.

Review: Excellent in every way! - I love this thing, sounds great out of the box, easy to set up and responds fantastically to EQ within the app. The ULT options are both very different and add a significant bass kick in each case. The basic sound without ULT is very musical and engaging, surprisingly wide stereo field for a one speaker system, good detail and with LDAC engaged in its highest setting sound fantastic - tried rock, metal, hop hop, punk and old soul on it - all sounded great with a quick change of the ULT modes to suit each genre. Built like a tank, confident of it's build quality and sound. Blew the JBL boombox out of the water for me( visited a major physical retailer to listen prior to ordering). My only negative is the lack of a shoulder strap, but I've sorted one out already. Superb purchase!
Review: Good bargain - Just what I ordered. A good upgrade to my SRS-SG300, which I’m sad to give away to my sibling. I Love the cylindrical shape. The three levels sound is amazing. The ULT1 is my go to sound choice: not too thumpy. Graceful yet deep at mid to low volumes. I did add my own setting in the equaliser. Now I have sound 4 settings to choose from. Also, the ULT flashing lights went away with the personal setting. Definitely keeping this one.

## Features

- INTRODUCING THE ULT FIELD 7: A portable, highly durable ULT POWER SOUND speaker, delivering superior sound pressure, deep bass, and crystal-clear detail, at home or on the move
- POWERFUL SOUND, ULTIMATE BASS: With two X-Balanced Speaker Units, two tweeters, and two passive radiators, enjoy superior sound pressure, deep bass, and crystal-clear quality – even at max volume
- HIT THE BUTTON, FEEL THE BASS: Unleash its true potential with the ULT button sound modes - Deep Bass adds weight to the lower frequencies, Attack Bass adds unparalleled sound pressure and energy
- CLEAR SOUND, EVEN IN NOISY ENVIRONMENTS: Featuring Sound Field Optimisation, the Bluetooth speaker will automatically adjust its audio to remain clear and detailed, despite surrounding noise
- LONG BATTERY LIFE: With a 30-hour battery life and a quick charging feature that provides 3 hours of playback from just a 10-minute charge, you’ll never be without music for long

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CX1XFLCV |
| Age Range Description | Adult |
| Antenna Location | For smartphones or tablets |
| Audio Driver Size | 46 Millimetres |
| Audio Driver Type | Dynamic Driver |
| Audio Output Mode | Stereo |
| Audio output mode | Stereo |
| Battery Average Life | 30 Hours |
| Battery Capacity | 5200 |
| Battery Charge Time | 5 Hours |
| Best Sellers Rank | 2,688 in Portable Sound & Vision Accessories |
| Bluetooth Range | 10 Metres |
| Box Contents | SRSULT70B.EU8 |
| Brand | Sony |
| Brand Name | Sony |
| Colour | Black |
| Compatible Devices | Laptop, Smartphone, Tablet |
| Connectivity Protocol | Bluetooth |
| Connectivity technology | Bluetooth |
| Control Method | Touch |
| Controller Type | Buttons |
| Country of Origin | China |
| Customer Package Type | FFP |
| Customer Reviews | 4.6 out of 5 stars 396 Reviews |
| EU Spare Part Availability Duration | 7 Years |
| Enclosure Material | Plastic |
| Frequency Response | 19.1 KHz |
| Frequency response | 19.1 KHz |
| Input Voltage | 230 Volts |
| Input voltage | 230 Volts |
| Is Waterproof | True |
| Item Dimensions D x W x H | 51.2D x 22.2W x 22.4H centimetres |
| Item Weight | 6.3 Kilograms |
| MP3 player | Yes |
| Manufacturer | Sony |
| Maximum Range | 1 Metres |
| Maximum Speaker Output Power (in watts) | 1 Watts |
| Model Name | Sony ULT FIELD 7 |
| Model Number | SRSULT70B.EU8 |
| Mounting Type | Tabletop Mount |
| Network Connectivity Technology | Bluetooth |
| Number of Audio Channels | 2.1 |
| Number of Batteries | 2 Lithium Ion batteries required. (included) |
| Number of Items | 1 |
| Power Source | Battery Powered |
| Product Features | 2 x ULT sound modes, microphone/guitar input, 7-band equalizer, multipoint connection, carrying handles, sound field optimization, smartphone charging, 2 x X-balanced speaker unit, 2 x tweeters, 2 x passive radiators |
| Series Number | 70 |
| Speaker Size | 1 Inches |
| Speaker Type | Outdoor |
| Speaker maximum output power | 1 Watts |
| Specific Uses For Product | Home, Portable, Smartphones, Tablets, Laptops |
| Subwoofer Connectivity Technology | Wireless |
| Subwoofer Speaker Diameter | 12 Inches |
| Total USB 2.0 Ports | 1 |
| Tweeter Diameter | 1 Inches |
| Unit Count | 1.0 count |
| Warranty Type | Extended |
| Water Resistance Level | Waterproof |
| Wireless Technology Type | Bluetooth |

## Product Details

- **Audio output mode:** Stereo
- **Brand:** Sony
- **Connectivity technology:** Bluetooth
- **Frequency response:** 19.1 KHz
- **Input voltage:** 230 Volts
- **Model name:** Sony ULT FIELD 7
- **Mounting type:** Tabletop Mount
- **Recommended uses for product:** For smartphones or tablets
- **Speaker type:** Outdoor

## Images

![ULT FIELD 7 - Wireless Bluetooth Portable Speaker with ULT POWER SOUND, Ultimate Deep BASS, X Balanced Speaker, 30 HR Battery, IP67, Waterproof, LED Lighting, Mic, Guitar Input - Black - Image 1](https://m.media-amazon.com/images/I/616eYxI55tL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent in every way!
*by J***E on 23 April 2026*

I love this thing, sounds great out of the box, easy to set up and responds fantastically to EQ within the app. The ULT options are both very different and add a significant bass kick in each case. The basic sound without ULT is very musical and engaging, surprisingly wide stereo field for a one speaker system, good detail and with LDAC engaged in its highest setting sound fantastic - tried rock, metal, hop hop, punk and old soul on it - all sounded great with a quick change of the ULT modes to suit each genre. Built like a tank, confident of it's build quality and sound. Blew the JBL boombox out of the water for me( visited a major physical retailer to listen prior to ordering). My only negative is the lack of a shoulder strap, but I've sorted one out already. Superb purchase!

### ⭐⭐⭐⭐⭐ Good bargain
*by J***E on 16 February 2026*

Just what I ordered. A good upgrade to my SRS-SG300, which I’m sad to give away to my sibling. I Love the cylindrical shape. The three levels sound is amazing. The ULT1 is my go to sound choice: not too thumpy. Graceful yet deep at mid to low volumes. I did add my own setting in the equaliser. Now I have sound 4 settings to choose from. Also, the ULT flashing lights went away with the personal setting. Definitely keeping this one.

### ⭐⭐⭐⭐⭐ Quality bluetooth speaker
*by W***I on 2 December 2025*

Nice sound, robust speaker and booming sound

## Frequently Bought Together

- Sony ULT FIELD 7 - Wireless Bluetooth Portable Speaker with ULT POWER SOUND, Ultimate Deep BASS, X Balanced Speaker, 30 HR Battery, IP67, Waterproof, LED Lighting, Mic, Guitar Input - Black
- Bose SoundLink Max Portable Speaker, Large Waterproof Bluetooth Portable Sound Speaker, Up to 20 Hours of Battery Life, USB-C, Built-In 3.5 mm AUX Input, Black

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-08-27*