Wrongduck SY15 Smart Ring with Vibration Alerts & Sleep Tracking
How it works
If your product is accidentally damaged within two years, Care+ includes one replacement. Claims are handled directly by Wrongduck. View plan terms.
Optional Care+. One plan per product.
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.
Stay Connected. Keep Your Wrist Free.
The Wrongduck SY15 is a screen-free smart ring with vibration alerts, sleep tracking and everyday activity insights. Get a discreet alert on your finger for incoming calls, SMS and notifications from Facebook, WhatsApp, LINE and X.
Adjust the vibration strength and the number of vibrations per alert to suit your preferences, and view your tracking information in the companion app.
Adjustable Vibration Alerts, Your Way
Personalize how your ring gets your attention. SY15 lets you adjust both vibration intensity and the number of vibrations per alert.
Choose a gentler setting for a subtle reminder or a stronger setting when you prefer a more noticeable alert. Try different settings to find what works for your routine.
Notifications for the Apps You Use
SY15 supports vibration notifications for:
- Incoming phone calls
- SMS text messages
- LINE
- X
Feel an alert on your finger, then check your phone when convenient. With no screen on the ring, notification content stays on your phone.
Notification delivery depends on your phone connection, notification permissions and companion-app settings.
A Smart Ring Without a Screen
If you prefer a wearable without an illuminated display, SY15 offers a straightforward alternative. Receive vibration reminders on your finger and review your sleep and activity information through the companion app.
The screen-free design suits people who want notification and tracking features while keeping their wrist free.
Silent Vibration Alarms and Reminders
Set vibration alarms and personal reminders through the companion app. Use them to keep track of your routine with a reminder you can feel instead of an audible phone alarm.
Customize the vibration strength and count to your preference. How noticeable an alert feels will vary by wearer and situation.
Sleep Tracking in a Ring Format
Wear SY15 overnight to record your sleep patterns and review them in the companion app. For people who prefer sleeping without a watch, it provides another way to follow their nightly routine.
Choose a suitable fit for comfortable wear throughout the day and night.
Everyday Activity and Wellness Insights
Follow your steps, calories, distance and daily movement in the companion app. SY15 also records heart-rate and blood-oxygen trends, helping you review your everyday wellness information in one place.
SY15 is intended for general wellness and lifestyle tracking. It is not a medical device and is not intended to diagnose, treat or prevent medical conditions.
Core Features Without a Monthly Subscription
Access SY15’s core notification and tracking features without a monthly subscription. Check your daily information and adjust supported settings through the companion app.
SY15 or SY1: Choose Your Preferred Design
Both SY15 and SY1 offer vibration alerts, adjustable vibration strength and count, and sleep and activity tracking.
Choose SY15 if you prefer a screen-free ring. Choose SY1 if you want an LED display on your finger.
Find Your Fit
Choose your preferred option and check the SY15 size guide before ordering. Confirm your phone and notification requirements so your ring fits both your finger and your routine.
Wrongduck SY15 Smart Ring with Vibration Alerts & Sleep Tracking
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