Watch Size Guide
Everything you need to find your perfect fit — case diameter, strap dimensions, and water resistance explained simply.
How to Measure Your Wrist
Use a flexible tape
Wrap a soft measuring tape around your wrist just below the wrist bone — where you'd normally wear a watch.
No tape? Use paper
Wrap a thin strip of paper around your wrist, mark where it overlaps, then measure that length flat with a ruler.
Note your size in mm
Record the circumference in millimetres. Use the chart below to match your wrist to the ideal case diameter.
Trust your taste
Prefer understated elegance? Go smaller. Want a bold statement? Size up. Both look exceptional — it's personal.
Measure in the morning when your wrist is at its natural resting size. Wrists can swell slightly after exercise or in heat, which may affect your measurement.
Case Size in Millimetres
28mm
Extra small
Petite wrists
32mm
Small
Women's fit
36mm
Medium
Unisex classic
40mm
Large
Men's standard
| Wrist Size | Recommended Case | Best For | Style |
|---|---|---|---|
| Under 150mm | 26 – 30mm | Petite / extra small wrists | Delicate |
| 150 – 165mm | 30 – 34mm | Small wrists, women | Refined |
| 165 – 180mm | 34 – 38mm | Medium wrists, unisex | Classic |
| 180 – 195mm | 38 – 42mm | Large wrists, men | Bold |
| Over 195mm | 42mm+ | XL wrists, statement look | Statement |
Strap Width & Length
| Case Size | Strap Width (lug) | Short Strap | Standard Strap | Long Strap |
|---|---|---|---|---|
| 26 – 30mm | 12 – 14mm | 95 / 115mm | 100 / 120mm | 105 / 125mm |
| 30 – 34mm | 14 – 16mm | 100 / 115mm | 105 / 120mm | 110 / 130mm |
| 34 – 38mm | 18 – 20mm | 105 / 120mm | 110 / 125mm | 115 / 135mm |
| 38 – 42mm | 20 – 22mm | 110 / 125mm | 115 / 130mm | 120 / 140mm |
Strap length is shown as short piece / long piece — e.g. 110/125mm means the buckle side is 110mm and the hole side is 125mm. Wrist under 155mm → choose short. Over 190mm → choose long. Most people fit standard.
Water Resistance Levels
3 ATM / 30m
Splash proof only. Rain and hand washing. Not suitable for swimming.
5 ATM / 50m
Light swimming and shower safe. Avoid high-pressure water or diving.
10 ATM / 100m
Swimming, snorkelling and water sports. Not for scuba diving.
20 ATM / 200m
Scuba diving and high-impact water activities. Full protection.
Water resistance is not permanent — seals age and can degrade from impacts or wear. Have your watch pressure tested annually if you regularly use it in water. Never press crown buttons while submerged unless rated for it.