So far I am really happy with this ring. I probably ordered a size too big, but it is comfortable and works on my thumb.
Onyx Smart Ring
7 / Black
$99.00
Sale price
$99.00
Regular price
$199.00
Skip to product information
Onyx Smart Ring
$99.00
Sale price
$99.00
Regular price
$199.00
Your recovery, quietly measured.
Heart rate, sleep stages, body temperature and activity · tracked 24/7 from a single ring with a 304 stainless steel finish. No wrist. No subscription. No noise.
Australian Owned
Free Shipping
1-Year Warranty
30-Day Returns
What it tracks
Heart Rate 24 / 7 + HRV
Sleep Stages Deep · REM · Light
Body Temp Trends overnight
7-Day Battery 90 min charge
5 ATM Water Swim · Shower
What you'll see each morning
A clean dashboard built around the metrics that actually matter · no noise, no upsells.
Sleep Score
87
↑ 4 vs last week
Resting HR
58 bpm
7-day avg
HRV
42 ms
Within your normal range
Ring Battery
73%
~5 days remaining
Mock data shown. Onyx pairs with the free Qring app on iOS 14+ and Android 9+.
Designed for 24/7 wear
Lightweight 304 stainless steel exterior with engineered polymer internal housing. 3.5 grams on your finger. A fully rounded interior with recessed sensors so you forget it's there · at the keyboard, in the gym, in bed.
3.5g
Lighter than a 5c coin
2.5mm
Slim profile
304
Stainless steel finish
Sizing made simple
Available in sizes 7–13. Use our size guide to find yours · takes 30 seconds.
Tip · measure your finger in mm. The size guide tells you which way to go if you're between sizes.
Need help? Message us and we'll find your fit.
In the box
Onyx Smart Ring In your chosen size & finish
Magnetic Charging Case Built-in battery for top-ups
USB-C Cable For charging the case
Size Guide Card Quick reference for fit
Tech specs
| Heart rate | Continuous 24 / 7 |
| Sleep tracking | Deep · Light · REM · Awake |
| Temperature | Real-time skin temperature sensor |
| Blood oxygen | SpO₂ monitoring |
| Activity | Steps · calories · distance |
| Water resistance | 5 ATM · swim-proof |
| Battery | Up to 7 days per charge · 60+ days with charging case |
| Compatibility | iOS 14+ and Android 9+ |
| Sizes | 7, 8, 9, 10, 11, 12, 13 |
| Weight | 3.5 grams |
| Material | 304 stainless steel exterior · PC/ABS internal housing |
| Chipset | Onyx R-series |
Questions, answered
What does the Onyx Ring track?+
Heart rate (continuous, 24/7), heart rate variability (HRV), sleep stages (Deep, REM, Light, Awake), body temperature, blood oxygen (SpO₂), steps, calories and distance.
How do I pick my size?+
Measure your finger in mm and use our size guide. If you’re between sizes, it tells you which way to go. The ring should feel snug and secure · if it slides around freely it’s too big.
Is the ring waterproof?+
Yes · rated 5 ATM. Showers, swims, hand-washing, rain and sweat are all fine. We don't recommend wearing it for hot tubs or scuba diving.
How long does the battery last?+
Up to 7 days on a single charge of the ring itself. The included magnetic charging case adds top-ups for around 60+ days of total wear between wall plug-ins.
Is there a subscription?+
No. The Qring companion app is free. Every feature on the ring works without a paid plan, forever.
Does it work with iPhone and Android?+
Both. The Qring app supports iOS 14 and later, and Android 9 and later. Sync via Bluetooth.
Which finger should I wear it on?+
Index finger is recommended · sensors sit best against the thicker, more vascular tissue there. The ring works on other fingers but readings are most consistent on the index.
Shipping, warranty and returns?+
Free shipping worldwide. Orders typically leave the warehouse within 7–10 business days with tracking. 1-year warranty against manufacturing defects. 30-day return window on unused rings.
Onyx is a wellness device, not a medical device. It does not diagnose, treat, cure or prevent any condition. If you have concerns about your health, please speak to a qualified clinician.
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Customer Reviews
Overall rating: 4.5 / 5 from 200 reviews.
Great looking ring and data as I recover from surgery - I can monitor my sleep and steps as I recover. Fantastic app too.
I've been using it for two weeks. It works very well with minimal interference. I'm very satisfied.
I am very impressed with this smartring. the delivery was very quick to new zealand. the ring is great quality and very easy setup with the qring software. the accuracy of the results so far match my apple watch ultra i hope that the longer term durability will match the quality found so far
I was surprised; I'm still using it and so far it's working perfectly.
It arrived perfectly
Perfect
I've only been using it for a short time, but everything is fine, it measured my sleep... now time will tell if it will last.
I loved it, easy to pair, seems good, size 7 for the index finger, left hand
I loved it, everything went perfectly!
I've only been wearing the ring for a day and I'm super happy with the purchase. The app works great and is easy to use. 10/10
Delivered super fast. set up was easy to do. size is perfect. so far very accurate. app is the same as the halo ring.
I loved it! It does everything that expensive ones do and looks great!
Item received thank you very much.
Great ring. Easy to set up and use.
It works perfectly.
It has been great so far. Very happy. Cheers
I've been using it for a few weeks now. works great, app that goes with it is easy to use. you can shower with it, it didn't loose color by now. battery lasts for a few days
Easy to use
Very good
Size 9 … it fit my finger perfectly.
Received quickly. surprised with how good the quality is. size is perfect, guessed based on others in reviews with pictures. charged quickly, app is easy to install and use. so far would recommend.
Great items as described
Received it as described in listing charged it and have been using for 2 days now so far everything is working well, will come back after 14 days to leave full review.
I wasn’t very sure about this. but the app is great! the ring is confortable. i see overall everything i wanted and it looks good
Very precise ring, records everything through its app, recommended for monitoring. The ring itself is thick, and by mistake I bought one that was too large (13), so it is advisable to measure your finger carefully and make it as precise as possible. I bought an 11, and I'm going to give this one as a gift.
Tested for a week, battery still at 40 percent after 4 days, took a shower and washed my hands without any problems, connects every time, what can I say, very good and perfect measurements, sockets as shown in the photo.
Works! i don’t know if its accurate but it works
Fast delivery, recommended, very nice, aesthetic, and so far it has worked perfectly. I need to investigate more about its other functions.
I recommend it! measurements are accurate comparing it to other devices.
It works for now. I installed the app and connected via Bluetooth, and it works. I think I'll need to use it for a few days to see how it goes.
Using it for 4 days... Pretty cool... I hate watches, so the ring allows me to measure some health metrics... it's been working very well and the battery lasts 3 to 4 days and charges to 100% in 30 minutes.
Actually pretty good. Links in nicely on iphone 16 “health” app and steps seem to count accurately. Very impressed. Battery life is also great!
Love it so far, hope its waterproof. Looks good
The product arrived in good condition, the ring fits my finger well. I will be testing it further, but for now everything is fine. The gesture control feature works, but with any movement it slides down the page; it's very sensitive and can only scroll down when you're browsing; you can't scroll up. It would be great if they could improve that. Thank you.
Arrived in less than a week ! Was super easy to set up, very easy to use. Overall very happy with it. I will be buying another one for my partner.