Wrongduck Retro Smart Ring for Women – Sleep & Activity Tracker
Pairs well with
Size chart
WRONGDUCK SIZE GUIDE
Find your best ring size
Click Find My Size to measure online in a few simple steps. You’ll get your recommended Wrongduck ring size instantly—no chart matching needed.
Wrongduck ring size chart
Choose the store size that matches your measured diameter or circumference.
| Store size | Diameter | Circumference | ISO / EU | UK |
|---|---|---|---|---|
| 6 | 16.5 mm | 51.8 mm | 52 | L ½ |
| 7 | 17.3 mm | 54.4 mm | 54 | N ½ |
| 8 | 18.1 mm | 56.9 mm | 57 | P ½ |
| 9 | 18.9 mm | 59.5 mm | 59 | R ½ |
| 10 | 19.7 mm | 62.0 mm | 62 | T ½ |
| 11 | 20.5 mm | 64.5 mm | 65 | V ½ |
| 12 | 21.4 mm | 67.1 mm | 67 | X ½ |
| 13 | 22.2 mm | 69.7 mm | 70 | Z1 |
| 14 | 23.0 mm | 72.2 mm | 72 | Z3 |
Between sizes? Choose the larger size for a more comfortable fit. Availability varies by ring model.
Measure with paper or thread
- Wrap a narrow strip of paper or non-stretch thread around the base of your finger.
- Keep it comfortably snug without squeezing your finger.
- Mark where the two ends meet.
- Lay it flat and measure the marked length in millimetres.
- Match that circumference to the chart above.
Measure at the end of the day when your hands are at a normal temperature, and repeat the measurement twice.
Shipping Information
Before the shipping,please allow us 1-2 business days for processing your order, timing depends on the actual situation.
Once your order has been shipped, we will immediately provide you with tracking information. Delivery times vary by region, Orders typically take 4-10 days to arrive.
How much is the subscription fee?
No subscription required. With a one-time purchase, you get full access to all health tracking features.
Package List
Smart Ring*1
Charging case *1
Charging cable *1
User manual *1
Wrongduck App Download
Looking for the correct app for your Wrongduck Smart Ring? Visit our Wrongduck App Download page, select your Smart Ring model, and download the compatible app for your device.
Wrongduck Retro Smart Ring for Women – Sleep & Activity Tracker
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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30 day return policy
We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.
For details, please see: Return Policy -
Shipping Information
Processing Time:
- Before the shipping,please allow us 1-2 business days for processing your order, timing depends on the actual situation(Public Holidays/Weekends excluded)
Shipping Time（Estimate）:
- Standard Shipping Fee: $5.99 per order.
- Free Shipping: Orders over $49.99.
- Delivery times vary by destination:
- Europe: 4-9 business days
- United States: 5-8 business days
- Australia & Canada: 5-10 business days
- Other Regions: 4-12 business days
For details, please see: Shipping policy
Vintage-Inspired Health Tracker for Women
Meet the Wrongduck Retro Bluetooth Smart Ring, where timeless elegance meets modern health technology. Designed specifically for women, this smart ring combines a classic, vintage-inspired aesthetic with comprehensive wellness tracking. The sides feature gold trim. It’s more than an accessory—it’s a discreet, intelligent companion that fits seamlessly into your daily life, from work to workouts to weekend outings.
Sleep Tracking
Monitor your sleep effortlessly with this ring. It tracks light sleep, deep sleep, REM, and wakefulness, providing a detailed analysis of your sleep patterns.
A built-in sleep coach offers reminders and soothing audio to improve your rest. The unique "body power" function evaluates fatigue by analyzing activity, body, and sleep data.
Activity Tracking
Perfect for sports lovers, this ring has a IP68 waterproof rating, so it’s safe for swimming, surfing, or showering.
With built-in GPS, it tracks running, walking, cycling, and more, while calculating steps, calories, and distance.
Smaller and lighter than a smartwatch, it’s a convenient fitness companion.
Blood Oxygen Heart Rate Monitoring
Blood oxygen is one of the important indicators of human health. Stay informed and proactive about your health. Prioritize your well-being with effortless tracking.
With the real-time heart rate tracking feature , you can find out how fit you are during the day when you are exercising and relaxing, and self-check your health in advance.
Smart Features Designed for Women
Tailored to support women’s unique health journeys, the Wrongduck ring includes intuitive menstrual cycle tracking and fitness monitoring. You can also view recent changes in body temperature. Log symptoms, predict cycles, and track daily activity such as steps and calories burned—all in one discreet device. Receive personalized trends and reminders to stay balanced and in tune with your body.
IP68 Waterproof
Whether you're washing your hands, caught in a light rain, or going for a swim, its water-resistant design can easily handle all your daily activities.
How to measure your finger size
Step 1: With a strip of paper or a thread place it between your fingers.
Step 2: Wrap it with enough tightness that it is a snug fit but not so much that it restricts your blood flow.
Step 3: Mark the lines where the thread/paper meet.
Step 4: Measure the distance between the marked lines on a scale. That's your circumference.
Step 5: Compare it the sizing chart to know your ring size.
I wanted a smart ring but didn't want to pay expensive price and have to pay for subscription. I am so glad I saw ad for this smart ring for under $60 and no subscription fee. I love this ring it tracks everything i8was looking for I would definitely recommend purchasing the Wongduck smart ring.
This is the first health tracker I’ve worn that doesn’t look like a health tracker. The design is genuinely beautiful — the vintage-inspired detailing and gold trim make it look like a real piece of jewelry, not a fitness gadget. I get compliments on it regularly.
Beyond the looks it’s actually comfortable to wear all day and night without thinking about it, which matters a lot for something you’re supposed to keep on for sleep tracking. Speaking of which — sleep and steps both work well and sync easily to my iPhone without any connectivity headaches.
If you’ve avoided smart rings or fitness trackers because they look too sporty or techy, this one solves that problem completely. Function and style in one.
This is the first health tracker I’ve worn that doesn’t look like a health tracker. The design is genuinely beautiful — the vintage-inspired detailing and gold trim make it look like a real piece of jewelry, not a fitness gadget. I get compliments on it regularly.
Beyond the looks it’s actually comfortable to wear all day and night without thinking about it, which matters a lot for something you’re supposed to keep on for sleep tracking. Speaking of which — sleep and steps both work well and sync easily to my iPhone without any connectivity headaches.
If you’ve avoided smart rings or fitness trackers because they look too sporty or techy, this one solves that problem completely. Function and style in one.
First of all, I love the app, it’s user friendly, and free, also the ring is so cute. Tested it for few days, battery life is good, it shows all the features like sleep, stress, steps and calories. Overall I love it.
Honestly, I’m blown away! It does way more than just track steps and sleep. Also, the photos don't do it justice—it looks so much better on my wrist. The battery life is a beast, too. I've had it on 24/7 since Thursday, and on Sunday night, I’m still sitting at 65%. The app is super easy to navigate and the data feels spot on. Such a great find!
I love Wrongduck and their smart rings. The rings are beautiful in addition to keeping track of all my health statistics for both myself and doctor to stay on top of, I also receive a lot of compliments. Their customer service is awesome and quick to respond. I just bought my second ring and can’t wait for it to get here.
It doesnt come charged. But not hard to set up. Ring has to be fully charge.
I don’t think I have ever had such a positive experience with a company. I ordered a ring and had worked out the wrong sizing, I was so excited for this product that I was fully willing to go through the hassle of returning it to get a better fit. The team at wrongduck went above and beyond to get me a ring that fits by sending out another one free of charge. I now have a ring that fits perfectly and so far has been amazing. I needed to track my sleep and steps, and it does that plus some. The ring is comfy and looks nice on, and the app is super easy to set up and use. For the price of these products, I cannot find one complaint. And customer service is chefs kiss. Thank you so much!
Just got it so I don’t have a full experience but so far I like it
It works just proper.
No instrustion no qr code
We're very sorry to hear this. The instruction manual and QR code are normally placed underneath the inner packaging at the bottom of the box. It appears your package may have been missing them, and we sincerely apologize for that.
We've already reached out to you by email and sent you the digital instruction guide and QR code so you can start using your ring right away. If you need any further assistance with setup or pairing, please don't hesitate to contact us—we're always happy to help.
Thank you for your feedback, and again, we're sorry for the inconvenience.
Won't connect to my phone...does not work...wasted my money.
Hi Celeste,
We're sorry to hear you're having trouble connecting your ring.
In most cases, connection issues can be resolved quickly and are often related to the setup process rather than the ring itself. We've reached out to you directly and would be happy to guide you through the connection step by step.
Please check your email and reply with your phone model and a screenshot of the app you're using. Our support team will work with you until the issue is resolved.
Thank you for giving us the opportunity to help.
This ring is gorgeous !! It doesnt look like a smart ring . I was a bit confused about a couple of things and contacted Wrongduck. The customer service was nothing short of TOP NOTCH !!! Iwas very pleased . As for the ring itself, i would highly recommend this company ! Craftsmanship the detail and the choices you have for any workout you can imagine to track your health including SWIMMING 😁👌🏼! Thank you and YES i would highly recommend this ring !!!
I wanted to update my review of this ring . I never really orded this colour(Pink) and when i email WrongDuck they went above and beyond to make sure I received the white ring i did want in record time ! Amazing!!Customer service was so kind and helpful (see review of white ring) Looking at buying one for my daughter soon .
Very pretty ring. If you want the pink pink, 💗 choose the darker one. Red. As the pink is very pale, it's still gorgeous tho!
Have had so many compliments ☺️