Wrongduck V8 Diamond Smart Ring
Pairs well with
Size chart
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.
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.
【Your Complete Fitness Partner】Ideal for active lifestyles, this fitness ring recognizes up to 128 exercise modes—from running and cycling to walking—and accurately tracks steps, calories burned, duration, distance, activity routes, and more. Use the insights to optimize your workouts and achieve your fitness goals smarter.
【No Subscription Fees】Unlike many health trackers, this device requires no ongoing app subscriptions. It features an IP68 waterproof rating, making it suitable for swimming and intense workouts. Works seamlessly with both iOS and Android.
【Personalized Automated Monitoring】Customize your ring to automatically measure blood pressure and heart rate at intervals you choose—whether every 30 or 60 minutes. Enjoy hands-free, personalized health insights tailored to your routine.
【Smart and Convenient Features】Designed for ease of use, this ring lets you control your smartphone camera with simple gestures. Just double-tap your finger to trigger the shutter remotely—freeing your hands to capture the perfect shot.
【Fast Charging & Extended Battery Life】With magnetic charging capability, the ring powers up in under an hour and lasts 2–4 days on a single charge (6–8 days in standby). The portable charging case provides multiple additional charges, so you never miss a beat in your health tracking.
【The Perfect Gift】Whether for health enthusiasts or fitness achievers, this smart ring offers accurate insights to help users improve overall wellness and performance. It makes a thoughtful and practical gift for loved ones.
Wrongduck V8 Diamond Smart Ring
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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14 day return policy
We have a 14-day return policy, which means you have 14 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