Description
Price: $299.00 - $6.99
(as of Nov 27, 2025 02:38:19 UTC – Details)
Product description
【Check the Size Before Purchase】 Before buying the Free Shark Smart Ring, we strongly suggest that you refer to the size chart and carefully measure the circumference of your finger. This will ensure you get the most comfortable wearing experience and easily avoid any unnecessary returns or exchanges.
【Intelligent Sleep Tracker, Caring for Your Health】 This Free Shark fitness ring is like a considerate little assistant for your sleep health. It will accurately monitor the quality of your sleep, and record in detail the durations of deep sleep and light sleep, as well as the specific situations of your wakeful states. You just need to open the app at any time, and you can clearly view all kinds of sleep indicators. Then, according to the professional reports, you can easily adjust your lifestyle to embrace better-quality sleep.
【Diverse Health Monitoring, All-round Protection】 The Free Shark Smart Ring has a variety of powerful health monitoring modes. Whether it’s running, walking, hiking, cycling, yoga, dancing, skipping rope or other sports, it can automatically and accurately track key data such as the exercise route, exercise time, steps taken, heart rate, speed, calories burned and exercise distance in the app. Moreover, it can continuously track important health data such as heart rate and blood oxygen throughout the 24 hours of the day, protecting your physical health in an all-round way.
【80-meter Waterproof, Suitable for Various Scenarios】 The Free Shark Smart Ring has excellent waterproof performance, with a waterproof depth of up to 80 meters. Whether it’s for daily wear, an intense workout session or a pleasant swimming time, it can handle it with ease. What’s more, even if you have sensitive skin, you can still enjoy an extremely comfortable wearing experience when wearing this ring.
【Long Battery Life and Ultra-thin Design, Enjoy the Convenience】 The Free Shark Smart Ring has a very strong battery life. After a full charge, the battery can last up to 5 days, easily keeping up with your busy lifestyle. When used with the smart charging case, the usage time can even exceed 30 days. It is widely compatible with both Android and iOS systems, which is very convenient and practical. In addition, the updated design is lighter, thinner and more comfortable, with a greatly improved wearing fit. It’s so light that you can hardly feel it on your finger.
【No Subscription Fees, Enjoy Exclusive Services】 With the Free Shark Smart Ring, you don’t need to pay any subscription fees, and you can unlock the full range of functions of the Free Shark Smart Health Monitoring App for life. Continuously enjoy the convenience of real-time health tracking, and also get professional and targeted advice, making health management easier and more efficient.
Customers say
Customers find the smart ring tracks various health metrics including heart rate, steps, and sleep patterns, while being easy to set up and charge. Moreover, the device lasts 3-5 days per charge and works well with both iPhone and Android devices. They appreciate its stylish design, accuracy, and consider it good value for money.
BFM –
Game-Changing Wearable Sleek Ring Tech
I recently purchased the Duobuy Smart Ring in size 9 (black), and itâs hands down one of the most impressive wearable tech purchases Iâve made. Right out of the box, the ring felt lightweight yet durable, with a modern, minimalist design that doesnât scream âtech gadgetâ â it just looks like a stylish accessory.What I Love:1. Comprehensive Health TrackingThis little powerhouse offers round-the-clock health monitoring, and I mean everything. Heart rate, blood oxygen, sleep quality, steps, distance, and calories â all tracked seamlessly and accurately. Itâs like having a personal health dashboard on your finger.2. Intuitive Air Gestures & Remote ControlThe air gesture feature is futuristic and fun. I use it to flip through TikTok, control music, take remote photos, and even scroll through e-books. It adds a level of convenience and cool factor I wasnât expecting in a device this compact.3. Battery Life & Charging CaseThe ring lasts 3â5 days per charge, and the included charging case is a game-changer. With up to 15 full charges stored, Iâve basically gone weeks without needing to plug anything in. Perfect for travel or just day-to-day use.4. Waterproof Durability (IP68)I never take it off â showers, washing dishes, even the pool. No issues at all. The IP68 waterproofing lives up to its promise.Pro Tip:Do yourself a favor and get the Duobuy sizing kit before you order. I did, and the size 9 fits like a glove. No need for returns or exchanges.Final Verdict:This ring is a brilliant fusion of fashion and function. If you want to stay on top of your health without strapping on a bulky watch, this is the way to go. Stylish, smart, and surprisingly powerful â highly recommend!
Klapn –
Pleasantly surprised
This is such a nice smart ring. Itâs quick to charge. The battery has a decent lasting life. The charger is super easy and small easily carried in your purse or in luggage if youâre traveling to ensure that you keep a good charge. The smart ring track your health. Iâm sure thereâs a way that would also track sleep and things and you can probably even link them to items like Apple health or possibly even youâre my chart account with your doctors office. The value for the money is very good. They are currently comparing my sleep study to it to see how accurate it actually is so weâll probably update it a later date. It looks nice itâs stylish. I did receive the black one which is what I wanted. I would advise to know your ring size and if your hands tend to swell, remember to size up a little Bit
Mayireny –
Sleek, Functional, and Surprisingly Useful!
I wasn’t sure what to expect with this smart ring, but it completely exceeded my expectations. The black finish looks sleek and modernâperfect for everyday wearâand it’s lightweight enough that I forget I’m even wearing it.Pairing it with my phone was quick and simple, and the functions work exactly as advertised. I love being able to unlock my phone, control apps, and share contact info with just a tap. Itâs a great blend of style and tech, without being flashy.If you’re into smart accessories or just want a discreet way to access some helpful features, this ring is a great buy. Highly recommend it!
Alayna –
Sleek, comfortable, works!!
I bought this smart ring for my husband and heâs genuinely impressed. It looks just like a sleek, modern ring, but itâs packed with features. He uses it daily to track his sleep, heart rate, and activity, and the data has been surprisingly accurate. The battery lasts several days, and the app is easy to use and understand. Itâs comfortable enough to wear all day, and he loves that it doesnât look like a typical piece of tech. The ring also has, a cute case to keep it in! This was a great gift and absolutely worth it!!
L –
LOVE MY RING!
i literally do not even leave my house without my ring on, itâs super helpful to know what my heart rate is at any time, it helps me keep my heart issues under control
Zippy –
A gadget to help getting healthier
I thought this ring was very accurate and the app was very easy to use you just input all your information and it’s ready to go. I like the Slick look and the battery life is very good as well. I didn’t find any problems with wearing it long periods of time. So I think the overall comfortability of it is idea.
Sherona –
Not worth it!
Most of the features promised donât even work in the app. My sleeping feature barely tracks, my sports donât track at all or my nap input. Itâs cool if your trying to track your steps but most of the other features donât work and I donât know if itâs the app or the actual ring.
Laptop 2 –
Great Smart Ring
I love this smart Ring it looks great on my finger, and you get a great deal on it. It tracks many different things that could be beneficial to keeping your health in track. The color goes with anything, and itâs super easy to charge as well as connect to your phone. I definitely recommend if you are looking for a cheap alternative to cheap track of your health and wellness.