OontZ Ultra Bluetooth Speaker, Dual Edition Waterproof Bluetooth Speaker, Aux input, 14 Watts, Surround Sound, Rich Bass,

(11 customer reviews)

Brand Cambridge Soundworks Model Name OontZ Ultra Dual Black Speaker Type Surround Sound Connectivity Technology wireless Special Feature Portable, Waterproof, Lightweight, Stereo Pairing PORTABLE BLUETOOTH STEREO MUSIC SYSTEM – With two wireless speakers included, the OontZ Ultra creates a captivating stereo soundstage that immerses you in your favorite music, podcasts, or movies. Experience a wider…



From the brand

Product Description

OontZ Angle 3 Ultra Bluetooth Speaker, Black
OontZ Ultra Dual Edition Speaker

Bring rich sounds wherever you go.

Discover the power of ULTRA. With high-quality stereo music, powerful bass, 20-hour playtime, excellent connectivity and a 100-foot wireless range – experience astonishing sound in a medium-sized speaker!

OontZ Angle 3 Ultra Dual Edition Bluetooth Speaker, Black
Unleash the power.

Exceptionally Loud Volume, Rich Full Bass

The high-quality sound, power, and features make the OontZ ULTRA the perfect Bluetooth speaker. Its 14+ watts of power combined with a volume booster produces loud, room-filling volume with crystal-clear mids and highs. With two precision neodymium drivers and a proprietary bass radiator, it produces high-quality full-range bass that belies its small size! Play it loud, distortion-free even at max volume.

Premium Features for Premium Music

OontZ Angle 3 Ultra Bluetooth Speaker, Black

Full Stereo Music System

Connect up to 4 ULTRA speakers together and play your music with incredible left and right stereo via the OontZ app.

OontZ Angle 3 Ultra Bluetooth Speaker, Black

Plays All Day

Loooooonger battery life lets you play all day on a single charge! This powerful speaker packs quite the punch!

OontZ Angle 3 Ultra Bluetooth Speaker, Black

IPX7 Waterproof Rating

No more worries about the rain or getting it splashed! IPX7 rating speaker is fully waterproof and can be immersed in water up to 3 feet.

OontZ Angle 3 Ultra Bluetooth Speaker, Black

100-ft Bluetooth Range

With an incredible wireless Bluetooth range of up to 100 unobstructed feet, listen to your music, ebook, or news, even when moving around the house.

Play It Loud With Superior Sound

OontZ Angle 3 Ultra Bluetooth Speaker, Black

oontz ultra bluetooth speaker

Additional information

Weight 0.48 kg

Black, Black-Dual, Coors Light, SUP-Blue, White

Compatible Devices

iPhone, Laptop, Desktop, Tablet, Smartphone

Mounting Type

Tabletop, Floor Standing

Controller Type




Battery Life

20 Hours

Included Components

User Manual, USB-C cable, Audio Cable

Product Dimensions

6.5"D x 2.8"W x 2.8"H

Audio Output Mode


Age Range (Description)


Is Waterproof


Charging Time

20 Hours

Warranty Type


Maximum Range

100 Feet

Number of Items


Control Method


Speaker Size

6.5 Inches

Water Resistance Level


Package Type

Standard Packaging

Number of Batteries

1 Lithium Ion batteries required. (included)

Connectivity Protocol


Item Weight

0.48 Kilograms, 1.06 pounds



Item model number



1 Lithium Ion batteries required. (included)

Date First Available

July 31, 2018

Country of Origin



Cambridge SoundWorks

11 reviews for OontZ Ultra Bluetooth Speaker, Dual Edition Waterproof Bluetooth Speaker, Aux input, 14 Watts, Surround Sound, Rich Bass,

  1. bobj90

    Update: 6-12-23These are still going strong! Just used one of them as a phone speaker and it worked great. Clear with no echo. Has not lost sound quality or battery life. I cannot stress enough: these sound waaay better than their price suggests. Get a pair of them and pair them blue tooth, and you will be very pleased. The bass is so good that you cannot place these speakers where loose objects are or they will make them vibrate. These little speakers will also walk off a shelf due to the bass they put out so make sure there is a ledge or something to keep them from falling off a shelf or rail on your patio.Updated 5-4-19:I returned the Anker Soundcore II due to the speaker losing bass and the power button went wonky. Anker did step up and sent me FOR FREE an Anker SoundCore Boost 20W Bluetooth Speaker with BassUp Techno! These sound way better than a single Oontz Angle 3 Ultra, way better. But, I would take a pair of the OontZ speakers and listen in stereo. You can get 2 Oontz Angle 3 Ultars for the price of one Anker. The Anker speaker rocks, but stereo is much better listening experience.Oh, Anker upgraded my speaker and honored the warranty even though 30 day window had passed.CHANGES TO ORIGINAL REVIEW:1. The OontZ Angle 3 Ultra (oa3u) sounds better in bass and full sound than the Anker Soundcore II (ASII). Not as clear in the highs but better overall sound2. Higher volumes, the OAS3U beats the ASII.3. While not suited for a outdoor party filled with drinking friends who are talking loudly, they are more than adequate for a family gathering where people are talking but not drunk. More for patio than yard use.4. When used with jetAudio EQ, these little speakers sound extremely good and the bass moves up, while not distorting.I listened to the following songs and compared these OA3U speakers with the ASII: Damian Marley – All Night; Depeche Mode – Lie To Me; Supertramp – Oh Darling; Level 42 – Something About You. Each of therse songs NEED to have bass and the OA3U won when playing each of these songs. Still like the ASII, but the OA3U are better.Review is for: OontZ Angle 3 Ultra (OA3U)Dual Portable Bluetooth SpeakerI wanted to let those searching for a great speaker for a budget price and good sound, you have found it. I have tried, used and enjoyed the following speakers: -Harmon-Kardan Onyx Studio II (pair) -JBL: Clip; Clip+; Flip; Flip II; Charge -LG PK3 -Anker Soundcore II -Aomais Sport II Portable 4.0These pair easily, but not intuitively. Read the pages 14-15 of the getting started manual and you are set. They even play a stored sound file that tells you which is the left and right channel. It plays in true stereo.For under a $75 for a pair of good BT speakers, that PAIR in true stereo, pump out good (not great) bass and are loud, this purchase is a no brainer.Out of a 4 Class system defined by me: -Class 1: HK Onyx Studio II -Class 2: JLB Charge II and subsequent models; OontZ Angle 3XL ULTRA; LG PK3 -Class 3: Flip-Flip X, Soundcore II, Oontz Angle Ultra III -Class 4: JBL Clip and similar pocket speakers.FOR ITS CLASS, this is at the top! In fact I am unsure if these speakers should move up a class when paired! I tried the Aomais brand speakers but they were too weak on bass, thoguh they are also true stereo. The Soundcore II actually sounds the best of Class 3, but it does not pair to play stereo. I would have gone with a pair of Anker Soundcore II if they played in true stereo. The SC II handles bass the best, and rival or beat Bose Soundlink II Mini.If you are going with one speaker under $50 and do not care about playing in stereo, the Anker Soundcore II beats the OA3U across the board. How? The bass is better, the rest is quality highs and lows and MOST of the volume range.The OA3U remain paired to each other even after turned off and then turned back on. In fact, you should disconnect BT connection if you use several devices with the OA3U or you will will have to go find the last device you paired them with and disconnect the BT. These pair with only one device at a time.Listening to “Holding Back the Years” – Simply Red. Without at least some decent bass this song would be ruined. Also listened to “How ‘Bout Us” – Champaign and “I Wanna get Next to You” – Rose Royce. All three of these songs require good bass to do them justice and these OA3U speakers do them justice. Whoa, Rush “Tom Sawyer” now playing. Decent bass for this song but this type of song needs the volume and bass of the HK Onyx Studio II CRANKED up. However, the little OA3U speakers are holding their own.”Black” – Pearl Jam, sounding good! Damn good and I have the speakers at about 65% ZERO distortion.Finally, these are NOT outdoor party, fill the yard with sound and drown out the guests. These are great indoor speakers (that can be used outdoors thanks to IPX rating) and are more than adequate for a good sized living room. People expect whichever speaker they are buying to be light, have a 24 hour battery and pump out at night club quality bass for less than $100, ain’t happening. That said, these are way above their pay grade.

  2. Amazon Customer

    4/14/24. OontZ Angle 3 Ultra. I read reviews before buying products. Thats why I’m writing this. I ordered on 4/4/24 and received 4/9/24. Package arrived good shape. Company packaging well done to protect product. Well defined users guide. Quality construction. Small speakers bought for car, so not expecting concert hall performance. Got the app so I could adjust sound. I like my bass. I am very pleased with this product. Can find nothing wrong. App works, quality sound, quality built, nice looking, long lasting battery and customer service is good. Very unusual to give 5 stars, but deserved.

  3. Remy

    In general, I have only good things to say about this mini speaker. Very good quality, very good sound, USB-C, auxiliary input via mini stereo jack, water resistant, good price compared to the quality of the product.The only downside I found is that it charges very slowly and can take a few hours for a 100% charge.

  4. Ari

    Edit: Took away a star, but this will only affect those with very sensitive ears. I can hear the faintest of electrical beeping noises coming from these speakers (even when nothing is playing), and it’s just barely audible. Most people won’t notice it at all, but it’s starting to drive me bonkers when I notice it. I’m probably going to have to get a higher quality set of speakers to replace these eventually.I have been trying to enjoy a pair of Amazon Echo Dots working together in stereo for about a year now, but they always seem to have issues (Alexa would respond only out of one speaker, sometimes it would work for a day or two but then only one speaker would play music, music would spontaneously stop playing, etc). Amazon’s system for this is just awkward and unreliable, so I figured I’d try setting up a pair of bluetooth speakers to one Echo instead and bought this product.The instructions were clear, with specific examples for pairing to Echo Dots and other devices from various companies, and after not much fuss, everything was set up and working perfectly. Sound quality is better than the Echo Dot (4th Gen), and every single issue I used to have with stereo playback has been resolved. I obviously bought the bundle with two speakers and getting them to work together was as simple as pairing one to the Echo, and then holding down a button to get the other speaker to pair wirelessly. These speakers have improved my Echo experience in every way.My only complaint is that the speakers are powered by USB and come with very short cords (about two feet long, USB-C on one end, 2.0 or 3.0 on the other) and do not include any type of wall connector. You may need to consider purchasing wires and/or USB power ports or adapters depending on your setup.Overall, highly recommended! If you’re trying to do what I did, I say forego the more expensive Echo products and instead buy a simple Echo Flex to pair with these speakers. You’ll do a lot better than you would with a pair of Dots.

  5. Skeeter

    I purchased a pair of Oontz Angle 3 ULTRA speakers to use with my PC. After carefully reading the instructions for stereo pairing, they were easy to install via Windows 11. I use them with my flight simulator program and love the way aircraft engines sound with separated stereo speakers. The speakers are placed one under each monitor where they fit nicely. I usually leave the USB chargers plugged in but can also unplug and move the speakers for even more separation of channels. They can also be paired with other devices we have around the house.

  6. Winn Tran

    It sounds very good. Price is so so. A little expensive for sound quality

  7. Richard S

    OontZ Angle3 Ultra (4th gen) speakers (Dual pack)Fabulous product. The ability to play left and right channels, using the 2 speakers creates an immersive stereo sound. They can be placed anywhere for whatever you are doing. With the app, you can adjust volume of each one, so the speakers don’t need to be placed equal distances apart from you. Also, they upgraded the charging port to USB type C. I previously had an older generation model with micro USB, it got bent up, and couldn’t be repaired. This 4th generation model is great. I’m a bit of an audiophile, and am impressed with the sound; good bass, mid and treble. The stereo setup, using paired speakers, blows other Bluetooth speakers away. I highly recommend it.

  8. Jamie Lamontagne

    Works well, quite content!I got this as a Christmas gift and quite content with it! Love how I have a left and right speaker that easily connects to my tv 🙂

  9. Kenneth Lam

    Probably the best speaker with built-in micFinding a speaker with a built-in mic is hard. Finding one with a good speaker is even harder. I bought 2 sets (4 speakers) for home and office. Apart from music, I use them for my Zoom meetings… totally hands-free.

  10. Andrew

    Below expectationsThe sound quality is not a good as expected

  11. B handous

    Doesn’t pair 80% of the timesYou have to sit and try tens of times to get music out of both st the same time

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