Smart Ring for Women Men - Fitness Tracker with Heart Rate/Blood Oxygen/Stress Monitor/Steps/Sleep Tracking, No App Subscription, 5ATM Waterproof Health Rings(10#)
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FREE refund/replacement until Jan 31, 2026
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Size: 10#
Style: Classic-Black
Features
- Check the Size Before PurchaseBefore buying the Domhong smart ring, it's advisable to refer to our size chart and measure your finger circumference carefully. This ensures a comfortable fit and helps avoid unnecessary returns or exchanges
- Multifunctional Smart RingThe vital health ring combines health monitoring, fitness tracking, and sleep analysis. Track heart rate, blood oxygen(SpO2), stress, HRV, sleep data, steps, distance and calories. This lightweight fitness ring provides real-time data to help you meet your health goals
- Track Multiple Exercise ModesOur fitness tracker supports multiple sports modes, like running, cycling, swimming, yoga, golf, etc. It records data accurately in real - time, offers detailed analysis and helps you adjust your plan. This stylish wearable is a great fit for an active, healthy lifestyle
- Remote Control PhotographyThis smart ring's remote shooting feature offers users a convenient and novel photography experience. You don't have to press the phone's camera button. Just wave the ring on your hand, and you can take photos easily, whether it's a selfie or a group photo
- Long - Lasting Battery LifeThe smart ring for women and men lasts 5- 7 days on a single charge. The fully - charged case can recharge it about 13 times, so you can charge anytime. Whether out or at home, no battery anxiety. It offers constant company for the best experience
Operating System: iOS 8.0+ or Android 5.1+
Memory Storage Capacity: 512 KB
Special Feature: Activity Tracker, Lightweight, Multisport Tracker
Battery Capacity: 18 Milliamp Hours
Connectivity Technology: Bluetooth
Wireless Communication Standard: Bluetooth
Battery Cell Composition: Lithium Ion
GPS: No GPS
Shape: Round
Brand: Domhong
Package Dimensions: 4.02 x 3.07 x 1.26 inches
Item Weight: 3.2 ounces
Item model number: R03
Batteries: 1 Nonstandard Battery batteries required. (included)
Date First Available: April 8, 2025
Manufacturer: Domhong
Memory Storage Capacity: 512 KB
Ram Memory Installed Size: 104 KB
Frequently asked questions
This product is currently out of stock. Please check back later for shipping info.
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
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Top Amazon Reviews
My doctor suggested I monitor my sleep patterns, but I wasn't thrilled about wearing a bulky smartwatch to bed. Luckily, a friend recommended the Domhong smart ring as a more comfortable, and much more affordable, alternative to the pricier Oura ring. I'm so glad I gave it a try. The ring is incredibly comfortable to wear all day and night. Plus, the battery life is impressive—it lasts a full week on a single charge. It comes with a compact charger that's perfect for travel. In addition to sleep tracking, the ring also monitors steps and workouts. I love that it synced easily with my Apple Health app, which allows me to share my data directly with my doctor as needed. It's a stylish and practical solution for anyone looking to monitor their health without sacrificing comfort.
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Reviewed in the United States on September 19, 2025 by Grub Guy
Size: 11#
Style: With LED-Silver
About the only thing going for this ring is it looks cool. Aside from that it has very basic options on the app, the battery holding a charge is inconsistent. I've had it for two days, the first day the battery depleted to 29%, today it seems to be okay. The big rub however is the heart rate, O2, and sleep modes were DOA. Time and steps is all that works. The ring is properly sized for my finger, not too loose and not too tight so I have no idea why the measurements are not registering. Tried several fingers and could never get O2 or heart rate to register anything.
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Reviewed in the United States on August 1, 2025 by Jared
I have been testing a LOT of the lower price smart rings recently, since I want something to track my sleep and oxygen levels at night: this one is my favorite. I like that there is no additional fees or subscription required for the ring. I like the app, since it's fairly straightforward and user friendly, and also lets you customize what measurements you see first -- all you have to do is click the 'Edit Card' link at the very bottom, and you can reorder and/or remove the measurement 'cards' displayed on the home window. I also really appreciate that the profile (listed as 'Me') also shows the current battery percentage, and will warn you to charge when it's near 20%. My pedometer watch and the ring don't always agree on my number of steps, but the results are still within 500 steps at the end of the day. The ring does seem to also be still adjusting to my insomniac ways, since it often decides I've only gotten 4 hours of sleep (and stops tracking after I have to use the restroom in the early hours) -- but it does a reasonable job of tracking my sleep stages until that point. I have also tested the ring's oximeter readings against the fingertip reader I use, and the two often agree, suggesting accuracy there, too. I don't know the accuracy of the stress level tracking, or what it's precisely using to calculate that -- possibly a combination of oxygen saturation and heart rate? -- but I have come to appreciate having that measurement as well. If the stress seems too high, I can effect that by taking a few slow, deep breaths and remeasuring. I think my favorite feature of this ring over the other smart rings I've tested is the slimness of the band. I did find going up one size helpful, since the charge port inside was noticeable on my proper ring size, but it feels and wears like a ring. I'm barely aware of it as I go about my day, I haven't noticed the burnished metal picking up scratches or dents like other smart rings, and it doesn't feel like I'm going around wearing a ring sizer from the thickness of the tech. I also really like that this brand has an included ring box charger -- much better looking and a better charge connection vs. the cord with a connector end too many comparably priced smart rings offer. I also appreciate the battery life: I've been wearing mine for 3 weeks, and just gave it its third charge, and 6-8 days seems to be the norm for this unit. If you want a low pressure, low cost step into wearable tech, I would suggest this one. Charging is easy and surprisingly infrequent; the app is user friendly and lets you track your day through multiple metrics; best of all, no additional money to shell out for subscriptions and continued use.
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Reviewed in the United States on August 4, 2025 by Sam Sam
Size: 9#
Style: Classic-Black
I've had the ring for about a week and a half. I haven't changed anything from day to day. One night it did not track my sleep and today, it didn't track my steps. When is does track, it does a good job. It also doesn't let me look back at previous days details. It says no data found, even though it did track on those days. I will update after longer use.
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Reviewed in the United States on April 30, 2025 by Amy C
Size: 9#
Style: Classic-Black
I wanted to track my sleep patterns and didn't want to spend the money to buy a Samsung or Oura ring. I wear a Samsung Watch 7 and sometimes wear it to bed but it was a little uncomfortable. When I first got this I was dubious about the results. I put it on and synced it while I was eating dinner and had 130 steps before I stood up. Over the next week, however it settled in and has been within a few hundred steps of my watch. Pulse Ox has been dead on with a finger-mounted meter and the heart rate is also well within the margin of error between the ring and my watch. For a few days I wore the ring and the watch to sleep. The ring seemed off the first couple days (it would count time laying in bed watching TV as asleep when the watch didn't) but similarly got better over the course of a few days. It should be noted I'm wearing it on my non-dominant ring finger. It would probably be even more accurate on my index finger and with a more snug fit. The black looks decent and seems to be holding up well. No issues with rain or washing my hands. Battery life is around four days. I throw it on the charger every 2-3 days while I'm in the shower and I've never gotten close to going dead. I wear a size 9 ring according to the Samsung ring sizer. I measured the way the description recommends and it said I was a size 12. That turned out to be too big and I exchanged for the 9 which fits well.
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Reviewed in the United States on July 29, 2025 by Bob Bob
Size: 11#
Style: With LED-Black
Bought this j ring about a month ago it's worked great everything it said it would do it does the only thing is that the battery was out after about a day and a half but real fast charging so it's never off my hand for too long
Reviewed in the United States on November 17, 2025 by W. Wood
I had this for about 4 weeks and it worked, but after that it stopped monitoring. Tried for about a week and a half to try to get it to work again with no luck. Finally just went ahead and threw it away this morning.
Reviewed in the United States on September 22, 2025 by Jenodell