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🎧 Elevate your audio game with open-ear freedom and marathon battery life — because comfort and connectivity never go out of style.
The TOZO O2 True Open Ear Wireless Headphones combine a unique dual-axis adjustable design with Bluetooth 5.3 technology, delivering up to 42 hours of playback. Featuring a 14.2mm dynamic driver and customizable EQ settings via the TOZO app, these lightweight earbuds offer crystal-clear calls, open-ear safety for driving, and seamless dual-device connectivity, making them the ultimate choice for professionals seeking comfort, style, and uninterrupted audio performance.





















| ASIN | B07KY7YS34 |
| Age Range Description | Adult |
| Antenna Location | Music, Driving, Calling |
| Audio Driver Size | 14.2 Millimetres |
| Audio Driver Type | Dynamic Driver |
| Audio Latency | 150 Milliseconds |
| Battery Average Life | 42 Hours |
| Battery Charge Time | 1.5 Hours |
| Best Sellers Rank | 81 in Open-Ear Headphones |
| Bluetooth Range | 15 Metres |
| Bluetooth Version | 5.3 |
| Box Contents | Wireless Charging Case |
| Brand | TOZO |
| Brand Name | TOZO |
| Cable Features | Without Cable |
| Carrying Case Battery Average Life | 42 Hours |
| Carrying Case Battery Capacity | 650 Amp Hours |
| Carrying Case Battery Charging Time | 3 Hours |
| Carrying Case Color | White |
| Carrying Case Height | 26.88 Millimetres |
| Carrying Case Length | 93.29 Millimetres |
| Carrying Case Material | Acrylonitrile butadiene styrene (ABS) |
| Carrying Case Weight | 78 Grams |
| Carrying Case Width | 58.2 Millimetres |
| Colour | White |
| Compatible Devices | Smartphones, Bluetooth Devices |
| Control Method | Touch |
| Control Type | Touch Control |
| Controller Type | Touch |
| Country of Origin | China |
| Customer Package Type | FFP file |
| Customer Reviews | 4.2 out of 5 stars 9,583 Reviews |
| Ear placement | On Ear |
| Earpiece Shape | Angular |
| Enclosure Material | Metal, Plastic, Polyurethane (PU) |
| Form factor | open |
| Frequency Range | 20 Hz - 20,000 Hz |
| Frequency Response | 2.4 GHz |
| Global Trade Identification Number | 06971681318712 |
| Headphone Form Factor | open |
| Headphone Jack | No Jack |
| Headphones Ear Placement | On Ear |
| Impedance | 16 Ohms |
| Is Autographed | No |
| Item Weight | 0.02 Grams |
| Manufacturer | TOZO |
| Model Name | T13187 |
| Model Number | TOZO Open |
| Network Connectivity Technology | Wireless |
| Noise Control | None |
| Noise control | None |
| Number of Items | 3 |
| Product Features | Noise Cancellation |
| Style Name | Open Ear Ring True Open Ear Headphones |
| Subject Character | Surround Sound, Noise Cancellation, Multipoint Pairing, Dual Ear, Game, Lightweight, Phone Control, Sports & Exercise, Volume Control, Water-Resistant, With Microphone, Echo Cancellation, Microphone Included, Fast Charging, Rechargeable Battery, Sweatproof, Touch Control, Android Phone Control, Microphone Feature, Universal Phone Control, iOS Phone Control |
| Theme | Driving |
| Total USB 2.0 Ports | 1 |
| Unit Count | 1.0 count |
| Water Resistance Level | Not Water Resistant |
| Wireless Technology Type | Bluetooth |
M**K
Brilliant for those who don't like the in-ear design of buds
The T20 tonal earphones have a similar case to the T21. The blue colour is beautiful. These earphones are one-size-fits-all so you don’t have to worry about finding the right sized eartips. They feel solid in the hand. They are shaped individually for ergonomic fit into each ear. The bass response on these is pretty good. Tozo have clearly tuned these to be bass heavy to compensate for the semi-open design. Unfortunately, this makes then sound muddy. The one-size approach means some people will find they fall out of your ears. I don’t mind this so much as you benefit from the openness. There is no occulation issue here and these are great for people who don’t like the sensation of being closed off with in-ear type earbuds. With this style that has the stem, any adjustment you try to make of the buds means you will end up tapping on the touch sensitive earbud and pause your music. I normally adjust both earbuds one at a time so I end up pausing my music when adjusting the right ear and resuming it again when adjusting the left. I do not have this issue with other non-stem style earbuds. The good news is that when using the Tozo app you can chose what the touch controls do. You can even switch them off completely if this bothers you. Considering that these do not go into your ear canal, they do not occulate and cause fatigue they offer a punchy sound. You can achieve better sound by using the EQ in the app. They offer wireless charging, USB-C charging and look very elegant with the OLED display. Tozo's products have matured signifcantly. They now have a deign language across their product range and that makes switching between products a seamless breeze
R**E
Favourite earphones
3rd paid we have bought we all have a pair 😄 comfy and good quality to listen too. Not tge best for receiving phone calls but you can. Great for 1 ear and being avle to hear work colleagues or children 😀 great value for money.
A**Y
Very good quality
These are very good. Battery charge lasts a while, even when they've not been used for ages. Sound quality is very good. Just a little bit annoying when they slip out of your earhole, as this will make one of the buds turn off.
M**.
True Comfort and Impressive Sound – A Game-Changer for Open-Ear Earbuds
I've been using TOZO earbuds for several years now, and they've consistently impressed me with their quality and performance. However, like many people, I’ve never been fully comfortable with in-ear buds for long listening sessions. That’s why I was especially excited to try the TOZO O2 True Open Ear Wireless Earbuds : and they’ve completely exceeded my expectations. These are truly lightweight and incredibly comfortable. In fact, it's easy to forget you're even wearing them. The open-ear design solves the comfort issue I’ve always had with traditional earbuds, making them perfect for long-term use without any irritation or pressure. The sound quality is fantastic; clear, rich, and surprisingly immersive for an open-ear design. Pairing was quick and seamless, just like with other TOZO products I’ve owned. My whole family uses TOZO gear — my kids, my wife, and myself and we've never been disappointed. The O2s continue that tradition of reliability and innovation. One small suggestion: my previous in-ear TOZO buds had a charging case with multiple lights to show the battery level. With the O2, there's only a single light that indicates when the case is fully charged, but it doesn’t show the current charge level. It’s a minor thing, but having that feature would be helpful. I chose the grey color, and I’m glad I did because it blends well with my typical clothing and looks sleek and understated. All in all, this is another excellent product from TOZO. If you're looking for a pair of wireless earbuds that are comfortable, sound great, and let your ears breathe, the TOZO O2 is a fantastic choice. Highly recommended.
T**F
Lovely
Great sound, amazing adjustment. Sometimes i forget i have them
M**M
Left stopped working
Want to give 5 star but left earbud stopped working after an hour of use and won't charge at all, build quality is excellent and audio but definitely returning
K**R
Sound
Great buy sound is great and
E**Z
Not worth it
Had for just over a month and they are not fit for use, when wanted they don't connect to my phone. And when not needed they constantly attempt to connect to my phone when in storage case, which drains the battery, so when ever they are needed the battery is flat.
A**A
Super
Bardzo przydatne
M**L
انصدمت
للاسف جاء لى لون مختلف عن الذى مختارة لكن كمستوى السماعه جيد
B**S
Correct et son agréable mais pas d'anc
Très correct malheureusement retourné car pas d'anti-bruit.
H**D
Slutade fungera
Tyckte hörlurarna var bra så länge den funkade men ena hörluren slutade fungera efter ett par veckor så det blev retur och reklamation.
D**D
Beyond my expectations!!
I have some somewhat expensive, great quality earbuds that I use the majority of the time. I needed a backup pair to use occasionally and for when family needs some (to keep their ear wax off mine! Lol). Because of their low price and the decent looking features, I gave these a try. My expectations were not too high but to my surprise, when I first used them, the sound quality was on par with my other earbuds. And the noise cancellation was surprisingly good. Also appreciative of the clear voice quality when on calls. I still prefer the others for my regular personal use, but these are an exceptional second pair!
Trustpilot
1 day ago
2 months ago