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Sony

Sony ULT Field 5 Wireless Portable Bluetooth Speaker, IP67 Waterproof, Dustproof, and Rustproof with Enhanced Bass, 25 Hour Battery, 360° Party Light, and Shoulder Strap (SRSULT50B), Black

  • Based on 2,174 reviews
Condition: Used - Like New
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Availability: 16 left in stock
Fulfilled by CE Store (SN Recorded)
Arrives Mar 24 – Mar 26
Order within 19 hours and 38 minutes
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Style: ULT Field 5


Color: Black


Features

  • BEST MIDRANGE BLUETOOTH SPEAKER: CNET Best of 2025. If you dont take our word for it, trust the experts.
  • ULT BUTTON: Press to boost the bass for a deeper, richer sound.
  • SHOULDER STRAP: Designed for easy portability, making it simple to carry your speaker wherever you go.
  • PARTY CONNECT BUTTON: Link multiple speakers together to create an immersive sound experience across larger areas.
  • IP67 WATERPROOF AND DUSTPROOF: Built to withstand harsh conditions with rugged durability for ultimate protection.
  • UP TO 25 HOURS OF BATTERY LIFE WITH QUICK CHARGING: Enjoy long-lasting playtime with a battery that can keep up with your music sessions. A 10-minute charge gives you up to 2 hrs of playtime, perfect for when you're in a rush.
  • 10-BAND EQUALIZER: Customize your audio experience with the 10-band EQ, allowing you to fine-tune sound for optimal clarity, depth, and balance.
  • AMBIENT LIGHTING: The light perfectly matches the vibe of your music, enhancing the atmosphere with vibrant colors.
  • ENHANCED POWER & SOUND PRESSURE: Delivers powerful, immersive bass and sound pressure for a premium audio experience.
  • 2-WAY ACTIVE DESIGN: Features a dedicated woofer and tweeter for high-quality sound across all frequencies.

Description

Experience superior sound with powerful boosted audio, deep bass, and vibrant 360° Party Lights. Designed for portability, this speaker is easy to carry, so your music and party vibes can go wherever you do. Perfect for any setting, it delivers immersive sound and lighting to elevate every moment.

Brand: Sony


Frequency Response: 2.4 GHz


Connectivity Technology: Bluetooth


Audio Output Mode: Stereo


Input Voltage: 9 Volts


Mounting Type: Free standing


Material: Plastic, Mesh fabric


Model Name: ULT FIELD 5


Speaker Type: Portable Speaker


Special Feature: Bass Boost, Built In Microphone, Dustproof, LED Light, Lightweight, Portable, USB Port, Waterproof


Recommended Uses For Product: For Music Players, For Smartphones or Tablets


Compatible Devices: MP3 Player, Smartphone


Unit Count: 1.0 Count


Surround Sound Channel Configuration: 2.0


Color: Black


Included Components: Speaker, Strap belt, USB Type-C® Cable


Product Dimensions: 5"D x 12.6"W x 5.7"H


Item Weight: 7.31 Pounds


Is Waterproof: True


Warranty Type: Limited


Maximum Range: 5 Meters


Number of Items: 1


Control Method: Touch


Wireless Communication Technology: Bluetooth


Speaker Size: 46 Millimeters


Power Source: Battery Powered


Water Resistance Level: Water Resistant


Number of Batteries: 1 9V batteries required.


Audio Driver Type: Dynamic Driver


Bluetooth Range: 30 Meters


Specific Uses For Product: Party, Travel


UPC: 027242931947


Style: ULT Field 5


Indoor/Outdoor Usage: Indoor, Outdoor


Manufacturer: Sony


Shape: rectangular prism


Set Name: ULT


Item Weight: 7.31 pounds


Item model number: SRSULT50B.UC


Batteries: 1 9V batteries required.


Date First Available: April 9, 2025


Charging Time: 10 minutes


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Mar 24 – Mar 26

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Better then the JBL Flip 7!
Style: ULT Field 1 Color: Off White
The Sony ULT Field 1 is perfect for the price you are paying for, it's a good speaker in terms of Sound, bass and size, it's a good sized speaker, the carrying strap built in the speaker is perfect for carrying, Bluetooth connectivity is good, the battery is good enough for most people, and the stereo pair feature in this speaker makes it sound even better! I did do a comparison with the JBL Flip 7, and the Sony ULT Field 1 is better in sound quality and it's cheaper. So if you want a good speaker for a good price, get the Sony ULT Field 1. ... show more
Reviewed in the United States on December 18, 2025 by Michael
    • Move aside Bose
Style: ULT Field 1 Color: Orange
I had a Bose SoundLink Micro Bluetooth Speaker in my shower to enjoy music while showering. It was good, nice size and average sound. I gave this Sony ULT Fiel 1 a try and man does this thing puts Bose on the bench. Amazing sound, both on bass and treble, its volumen strength is scary, I cannot use this at half a volume on Spotify because is way to much loud. Nice design too, its battery life is great, worth its price every penny. Fully compatible with my iPhone 16 Pro. ... show more
Reviewed in the United States on January 26, 2026 by Alex V.
    • The Sony ULT Field 3: The Sweet Spot
Style: ULT Field 3 Color: Black
This is an amazing speaker. Although it is very portable, it does verge on being too big to carry around with you everywhere. I'm no audiophile, but this speaker sounds great to me. It carries a proper punch and the highs are nice and crisp. There is a noticeable difference in sound with the ULT mode off or on. You're going to want to keep it on if you want that rumbling bass sound, but there's enough boom with it off. I haven't dropped it and don't plan on doing so, but the rubber molding on each end feels sturdy and able to absorb a decent fall. The waterproof feature is nice in case you ever leave this speaker out in the rain by mistake or want to keep it near a pool. Battery life is great. I have not timed it, but the battery last for serval days with multiple hours of use per day. I'm confident the battery claims from Sony are accurate. The ULT Field 3 is the sweet spot if you want a speaker that can be your primary Bluetooth speaker as well as a portable option. Get it. Your neighbors might hate you, but your ears will love you. ... show more
Reviewed in the United States on December 11, 2025 by David Dee
    • Things I wish I knew before I bought this.
Style: ULT Field 1 Color: Forest Gray
Review Image by Pat Pat
Review Image by Pat Pat
Review Image by Pat Pat
Review Image by Pat Pat
Review Image by Pat Pat
Review Image by Pat Pat
Review Image by Pat Pat
The media could not be loaded. So, yes 5 stars, and I mean that. To cut to the chase, this is an excellent speaker, and you should get one! Now, I usually do not post reviews, but I thought if you knew all this, it would help you understand why I gave it 5 stars and recommend it so highly! SOUND It sounds way bigger than it looks. The ULT button adds a lot of bass and I love that! It is great for EDM, Hip hop, R&B, 80s, 90s,... I tried basically everything I could, and it all sounded great. Even added a little more depth to a classical cello playlist I listen to while I am working. If you like a less bass-heavy sound, just turn the ULT feature off, and it will sound excellent. If that does not suit you, there is a 3-band EQ in the app. OH, and it sounds just as good standing up as it does lying down!! APP As mentioned, there is an EQ in there!! You can also change other settings and even see the battery life, which I could not believe was still 60% after a couple of days of me casually using it! Super surprised because I never charged it when I got it! Oh, I also noticed the "group with other speakers," and apparently, you can pair another one of these and get stereo sound out of them.... I have not tried that, but I will as soon as I get my second one! STRAP This was one I was really unsure about when looking at it online. The strap is genius! It can tighten or loosen and then stay in place. My little one liked to carry it around like a purse, but it is really versatile, and I found I could hang it one way or another everywhere I went. DESIGN Again the design is great, it is very stable standing up or lying down. The buttons are easy to use and because they are raised, you can use them without even looking at them. The SONY logo on the front looks silver most of the time but actually has some... I don't know what, but it changes color, which is a nice touch. See pics. Love the Forest Grey color, it is exactly as expected. A subtle green/grey that I have gotten a lot more comments on than I ever though I would. LIFE/KID-PROOF! Ok, so I like music in the shower, and let me tell you... this thing delivers, even when it got wet it still sounded clear. I did not need to have it at full volume either. Of course, my girls heard it, and when it was bath time, they wanted to have it with them. That is when I discovered it could float!! Now it does not sound great that way, but it still played even after multiple "accidental" dunks in the tub! They also loved to see what they could put on the woofer part, and see it dance and fall out. Lastly it is stink proof, as well as mud, sand and waterproof... My daughters and I clean the pond behind our house, usually after big storms, and pick up plastic and other garbage we find. My 6 yo, who likes to hold the speaker as a purse, thought it would be a great idea to bring "Ultra" (that is what they named it) with us while we did so. As expected, it dropped into the stinky pond muck when a dragonfly landed on it, and she screamed and tossed it like a live grenade...after fishing it out, I rinsed it off with some dawn and the water hose and it was good as new. To say this has held up remarkably well is an understatement. It looks great, sounds great, and I would recommend it to anyone looking for a portable speaker. Hope this review helps!!! ... show more
Reviewed in the United States on May 20, 2024 by Pat Pat

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