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.
BEST MIDRANGE BLUETOOTH SPEAKER: CNET Best of 2025. If you don’t 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.
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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
Original price was: $349.99.$21.99Current price is: $21.99.
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Reviews
9 reviews for 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
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Marc Berrenson –
EXCELLENT SOUND, EXCELLENT VALUE
This is an excellent Bluetooth speaker. Its compact size belies its outstanding sound quality. It easily surpasses the Bluetooth speakers I’ve heard elsewhere. Worth the money. Long operating time with relatively short charge time.
Pat –
Things I wish I knew before I bought this.
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!SOUNDIt 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!!APPAs 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!STRAPThis 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.DESIGNAgain 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!!!
pixeljuggernaut –
A Hole-in-One Buy!
As an avid golfer, I’ve been on the hunt for a speaker that’s rugged, compact, and delivers solid sound without being a distraction—and the Sony ULT Field 1 absolutely nails it.Clear, Punchy Sound That CarriesI’ve used this speaker on several rounds now, and it sounds incredible out on the course. Even with a bit of wind or ambient noise, the audio is crisp and full. The bass is impressive for the size, especially with the ULT button on—it gives my playlists that extra thump without overpowering the fairway.Just the Right VolumeIt gets plenty loud for our foursome to enjoy, but it’s easy to keep at a respectful level for other golfers nearby. A nice balance of power and control.Built for the ElementsMorning dew, dusty carts, the occasional drop—this speaker handles it all. The IP67 rating means I never worry about water or dirt. It’s been in my golf bag, clipped to my cart, and even survived a quick rain shower.Battery LifeOne charge easily lasts through 18 holes—and then some. I’ve used it for full rounds plus some range time without needing to recharge. If you forget to plug it in the night before, you’re still good to go.Quick Bluetooth SetupBluetooth 5.3 means it pairs fast and stays connected. I just turn it on when I get to the first tee, and it reconnects instantly to my phone. No hassle, no fiddling.If you’re looking for a speaker to bring onto the golf course, I can’t recommend the Sony ULT Field 1 enough. It’s loud without being obnoxious, rugged enough for real outdoor use, and stylish to boot. Easily one of the best gear upgrades I’ve made this season.Would absolutely recommend to fellow golfers who enjoy a little soundtrack to their swing.
Panthro –
the juice is worth the squeeze
It is worthy. Best bang for your buck. Small enough to be portable. Music actually sounds good. Highs are crisp, mids are not muddy, and it’s got bass. You have to press the ult button but if you’re listening to reggae or hip hop and need to feel that thump, it’s thumping. And it’s on sale right now. Must have if you’re looking for a portable bluetooth speaker.
Duane U. –
Excellent!!I am an audiophile! Having said that, I pay attention to all things sound quality related. If you are like me,MP3 files etc don’t cut it. This model was made for the demanding listener. Not all Bluetooth codecs are the same My FiiO M11+ portable player has Ldac and a 3.5Line output. Both of these feature are able to be utilized on the Sony ult field 5. I play dsd and ripped cd files from my FiiO to the Sony. The sound of the Sony is often described as bass heavy. Nonsense. This speaker on the ult2 setting is rich full and natural.The speaker walks the fine line between just enough bass to sound natural,(bigger drivers) and reasonablePortability. The amplifier has decent power output to get to enthusiastic loudness, but still sounds very natural at modest levels as well, and a substantial sized lithium battery to have long all day listening sessions. Like other reviews have pointed out, the colour changing lights are a surprise. They are not too flashy, or over done. They add to the experience.The carry strap is very well made with the ends being metal and not plastic. The sound quality is very well tuned and musical. It is not boomy overblown bass.If you play lesser quality low bitrate files on a lesserQuality Bluetooth codecs, then perhaps you will have a different sound.But careful examination of this models features and build quality and its weight,(7lbs) will tell you the type of audio quality to expect at high bitrate playback over Ldac Bluetooth or direct line input, which is necessary for excellent sound quality. This is a portable Bluetooth speaker for the discerning listener.Well done Sony!
soham –
Don’t get Confused just buy it, you won’t regret. Sound quality is top notch, great clarity for a bluetooth speaker. It supports HIRes bluetooth codec like LDAC not many speakers have these although you need to be a android user.For better experience and comparison i suggest to visit store to experience the by yourself.For portability, it is heavy like 3.3kg but solder strap is given and with solder strap the portability is not an issue.Battery life of this speaker is also good and you can use external power source like ac adaptor also with type c and get extra boost on bass and volume.Party light is also very cool.Overall is a great speaker total value for money in this price, (better sound than JBL xtreme 4).Build quality of this very top notch, have ip67 rating.In the functionality, the Sony’s party connect is there if you have Sony’s other speakers which have this feature.Can connect two same speakers as in stereo although the speaker it self is stereo. In the back io panel there is also a aux in port for audio and the speaker can be a powerbank to charge your phone.All these things which make this speaker great in functionality.
Dulce C. –
Qué onda con ésto? Lo abro o no? Tiene diurex encima de la cinta de Sony. Qué onda!!! 😤Pues lo abrí y todo estaba en su lugar.. Una ligera imperfección a un costado del altavoces z. Espero sea de Sony y no porque sea usado y de un golpe.
jesus g. –
Suena bien
Giuseppe Improta –
This speaker has surpassed my expectations by a good margin.I bought this to use in my RV, and it fills the whole space with great-sounding music!The volume is good, and the music quality is excellent, with decent bass as well.It is also really well built, and I can see why people rave about its sturdiness.Don’t think further, just get it. I didn’t find anything better at this price point, and I love it.