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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.
10 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 (SRSULT50W), Off White
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$348.00

Michael –
Better then the JBL Flip 7!
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.
David Dee –
The Sony ULT Field 3: The Sweet Spot
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.
Nick P. –
Super speaker
Super speaker. Purchased Sony ULT Field 1, JBL Flip 6, Bose SoundLink Flex and SoundLink Revolve +II for comparison (give away Bluetooth speaker at end of annual international trips, so I go through a few of them). Have also had several UE Boom 1-3 (unbeatable speakers, but no longer available), and a few cheaper Bluetooth speakers. My criteria include: battery life, weatherproof, sound quality (realism rather than bass-heavy, although good base is required for projection, especially outside or when on boats or with much noise), size, portability, volume without distortion, affordability (~$100). All are comparable in most aspects. Full volume level is very similar, none distort, bass is a little more distinct in JBL. Soundstage is absent with all, but mid- to high-volume compensates for this, and projection is good with all. Running two UE Booms was a good way around this, but I want to carry only one speaker (traveling, in the garden, fishing, etc) and not deal with proprietary apps required to run two in stereo. The JBL beats all for portability (size, shape, hanger), with the Sony right behind (just a bit larger). SoundLink Flex doesn’t project quite as well, but is still a great speaker (when on sale and cheaper than the other two). The Revolve +II sound quality, projection, soundstage and volume beats them all, but is too large and expensive to carry on trips, so was just used as a comparison to what a Bluetooth speaker could do (nothing even touches the sound quality of the Sonos Move, that I borrowed from a friend – out of curiosity only – doesn’t fit my criteria of portability or affordability). In short – you’ll be happy with any of these three, but I’ll stick with the JBL and Sony until no longer available.
J. S. Coile –
Very nice sound with amazing interface
Love the speaker. Smart and compatible to sync with my son’s ULT Field 7 (and so many other speakers. Strong battery really nicely balanced sound. App and phone pairing was fast and simple. Comfortable carry strap that has well concealed connectors make portability extra easy. Well done Sony
RandomDood1995 –
It’s Sony What More?
Overview: 4/5 star (scroll lower for full review)—–Pros:- Long Battery Life- Pretty Quick Charge Time Considering it’s Size (type c ftw!)- Very Good Sound and Loudness with Clarity- Comes With a Carrying Strap- AUX Input!!!!- CAN BE USED WHILE CHARGING!!!—–Cons:- Size??? I think its fine for the sound quality you get- Need the app to use and disable some functions———————==============List of use:- Outdoor family time; bbq, sports, pool etc.- Inside if I don’t want to turn on the home theater system or working out in the basement- In the garage when I am working on my car———————IN THE BOX:- Type C Charging Cable- Speaker- Carrying Strap==============Review:Alright so before reviewing, I actually bought this to replace a week old Ultimate Ears Megaboom 4. I kept the Ultimate Ears but if I had known that they were a Logitech Brand I would have never bought them. Logitech drivers aren’t that great imo. Also I want to say I bought the Sony Ult 5 on sale at $250 which is a complete steal. $50 extra more than the Ultimate Ears but they sound a lot better and also get way louder at lower volumes while keeping clarity. The only thing the Ultimate Ears have better are the mids and I will say that they produce them very well out of the box but once you EQ the Sony’s, they will be better overall.Enough comparisons, the Sony Ult Field 5 is a small to medium size Bluetooth speaker that is very capable of providing music for a whole backyard and annoying your neighbors (perfect!). I listen to them at about over half volume and they are very loud with great clarity. Out of the box they sound good but go through the 3 settings and see what works for you. The 3 “sound” settings can be selected by pressing the big ULT button or doing it in the app I suggest the app since the button will play this loud blasting noise when pressed. First setting (no lights on button) I think is a flat EQ, second setting is for more bass (sounds bad imo), third setting is the best if you don’t want to EQ the speaker yourself, I think it just boosts everything up but its too much bass so I ended up EQing it myself in the app with the custom EQ option. My EQ settings are 0002234433 and I listen to EDM and Rock – Metal stuff and that seems to be the best for me. The speaker is very well built and has some weight to it so use that carrying strap. The carrying strap is kind of cool as it can extend to be a shoulder sling or shortened to like a small bag handle and to put them in just pull up the rubber covers and hook the strap into the loop. Battery life is pretty great, I seem to charge them like maybe 2 or 3 times a month depending on usage. My usage is anywhere from either an hour a day or if its outdoor then it could be hours on endless playback and still not need a charge. Charging is really fast too. I am not sure of the actual time but it feels like an hour or 2 for full charge but I do have a really nice charging block so that affects things a little bit. Also I am not sure when Sony finally allowed it but you can use it while its being charged unlike past speakers. Physical buttons include power, bluetooth, connect to other sony speakers, play/pause, volume, and ULT and also an AUX input behind the small back cover, yes an AUX input!!! You will need the app to access more settings of the speaker and it is worth downloading. I can’t say much about the connect feature where you connect to other speakers but I would assume it is awesome and better to piss the neighbors off but at that point you might as well build a nice budget portable stereo system. All in all the Sony ULT Field 5 is worth it at $250 for being a bluetooth speaker. Anything around the $200 mark will not sound as good or produce the same stage presence as the ULT Field 5s. 4/5 product and will definitely recommend for anyone who wants a good 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!
Brandon Cuellar –
Excelente bocinaSuena super, muy buena opción, a mi me gusta que suenen mas los bajos que agudos y sony lo logro 👌🏻Recomiendada.
Tobias –
Excelente
Shoumya Jana –
The Sony ULT 1 hits harder than a TIE fighter in hyperspace. Bass so deep even Darth Vader would nod in approval. Highs slice through like a lightsaber, mids stay calm like Yoda meditating, and the whole thing feels built to survive a Death Star blast.Connectivity is smooth, battery life goes the distance, and the build quality feels rock solid. Compact yet mighty, it’s the Jedi of portable speakers, balanced, powerful, and wise.Warning: play it loud and your neighbors might join the Rebel Alliance.Verdict: The Force isn’t just strong with this one, it is this one.
Jose Luis Dominguez –
Es un equipo Sony, eso es todo lo que lo hace de 5 estrellas