
Wrongduck Care — 1-Year Warranty
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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.
One year of warranty coverage for your Wrongduck device, with up to one replacement for a covered hardware fault under normal use.
One plan covers one main product. Accessories are excluded. Support is provided directly by Wrongduck at support@wrongduck.com.
This optional plan does not reduce your existing warranty or statutory rights.

Wrongduck Care — 1-Year Warranty
Bei Fragen können Sie uns jederzeit gerne kontaktieren. Wir melden uns schnellstmöglich, werktags innerhalb von 24 Stunden, bei Ihnen zurück.
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30 Tage Rückgaberecht
Wir haben ein 30-tägiges Rückgaberecht, d. h. Sie haben 30 Tage nach Erhalt Ihres Artikels Zeit, eine Rückgabe zu beantragen.
Einzelheiten finden Sie unter: Rückgabebedingungen -
Infos zum Versand
Bearbeitungszeit:
- Vor dem Versand bitten wir Sie, uns 1-2 Werktage für die Bearbeitung Ihrer Bestellung einzuräumen, die Zeit hängt von der aktuellen Situation ab (ausgenommen Feiertage/Wochenenden).
Lieferzeit (Schätzung):
- Standardversandgebühr: 5,99 $ pro Bestellung.
- Kostenloser Versand: Bestellungen über 49,99 $.
- Die Lieferzeiten variieren je nach Bestimmungsort:
- Europa: 4-9 Werktage
- Vereinigte Staaten: 5-8 Werktage
- Australien & Kanada: 5-10 Werktage
- Andere Regionen: 4-12 Werktage
Weitere Details finden Sie unter: Versandrichtlinien

