Duobuy Smart Ring Health Rings for Women Men, Fitness Tracker with Heart Rate, Blood Oxygen, Blood Pressure, Sleep Tracker, Step Tracker, No Subscription Fee, IP68 Waterproof for iPhone & Android: Intelligent Sleep Tracker
Ever wished your health stats could just, you know, follow you around? Well, now they can. Meet the Smart Health Ring—your new 24/7 health buddy. It's not just counting steps; it's keeping tabs on your heart rate, blood oxygen, and even your blood pressure, giving you the lowdown on your body's inner workings in real time.
And let's talk about sleep. Because who doesn't want to wake up feeling like they've actually rested? With intelligent sleep tracking, this little ring figures out your sleep quirks so you can finally get some quality shut-eye. Plus, it's got your back (and legs, and arms) with multiple sport modes. Whether you're sprinting, spinning, or striking a downward dog, it's game on.
- No sneaky subscriptions here—what you see is what you get, forever.
- Battery life? A solid 5 days, and if you're the forgetful type, the charging case has got you covered for up to 60 days. (Yeah, we were impressed too.)
- Plays nice with Android 4.4 and iOS 8.4 or newer. So, unless your phone's a relic, you're golden.
Home, gym, or somewhere in between—your health's always in the loop with the Smart Health Ring. No excuses now, right?
- 24-hour health monitoring
- Activity tracker with multiple sport modes
- No subscription fees
- Long battery life
- Easy to charge and wide compatibility
- Intelligent Sleep Tracker
General specs
- Brand: Duobuy
- Model: Smart Ring
- Seller: Amazon
- package_dimensions: 3.03 x 2.95 x 1.85 inches
- item_weight: 3.84 ounces
- batteries: 1 A batteries required. (included)
- memory_storage_capacity: 128 MB
- First listed by seller: 5/11/25
If you are interested in more details, you can find full information on the seller's page.
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| Brand | Duobuy | Duobuy | Duobuy | Duobuy | Duobuy | KNGAD |
| Model | Smart Ring | Smart Ring | Smart Ring | Smart Ring | ||
| Color | ||||||
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| Price | $69.97 | $69.98 | $69.98 | $69.98 | $69.98 | $69.98 |
| Seller | Amazon | Amazon | Amazon | Amazon | Amazon | Amazon |
| Update | June 27, 2025 | June 29, 2025 | June 27, 2025 | July 17, 2025 | June 26, 2025 | June 29, 2025 |
| package_dimensions | 3.03 x 2.95 x 1.85 inches | 3.62 x 3.54 x 1.26 inches | 3.03 x 2.95 x 1.81 inches | 3.66 x 3.58 x 1.26 inches | 3.07 x 2.91 x 1.85 inches | |
| item_weight | 3.84 ounces | 3.2 ounces | 3.84 ounces | 3.52 ounces | 3.84 ounces | |
| batteries | 1 A batteries required. (included) | 1 A batteries required. (included) | 1 A batteries required. (included) | 1 A batteries required. (included) | 1 A batteries required. (included) | |
| waterproof | IP68 | IP68 | IP68 | IP68 | ||
Health Rings for Women Men, Fitness Tracker with Heart Rate, Blood Oxygen, Blood Pressure, Sleep Tracker, Step Tracker, No Subscription Fee, IP68 Waterproof Smart Ring for iPhone & Android
Emily G.
Boston, MA
May 21, 2025
As someone who researches a lot before buying, I picked this up from a local store, which was convenient. It's been about a month, and overall, it's decent for general health tracking. The sleep insights are helpful, and I enjoy not paying subscriptions. But for serious fitness or medical use, it might not cut it. It's a good starter ring, but I'd recommend it with caution if you need precise data. :)
- Pros: I liked that it tracks my heart rate and sleep without any extra fees, and the battery lasts a good while, which saved me a few times when I forgot to charge it. It's fairly easy to use with my phone, and the design is sleek, making it comfortable to wear all day.
- Cons: The blood pressure readings could be off sometimes, I could be wrong but they don't match my doctor's checks. It's not super accurate for intense workouts, and the app feels a bit basic, lacking some features I expected for the price.