Size guide
Watch sizing comes down to two numbers: the case diameter and the strap width. Both are listed on every product page, under Details. This page explains what those numbers mean on a real wrist.
1. Measure your wrist
Wrap a tape measure — or a strip of paper you mark and then measure with a ruler — around your wrist, just past the wrist bone, where the watch will sit. Keep it snug, not tight. Write the number down in millimetres.
2. Match the case to your wrist
| Your wrist | Case diameter that sits well |
|---|---|
| Up to 150 mm | 34–38 mm |
| 150–170 mm | 36–40 mm |
| 170–190 mm | 40–44 mm |
| Over 190 mm | 44 mm and up |
These are starting points, not rules. A case should not hang over the edge of your wrist — if the lugs (the arms that hold the strap) stick out past the bone, the watch is too big. Everything else is taste: the same 40 mm case reads as classic on one person and oversized on another.
3. Strap width
The strap width is measured between the lugs, and it is what decides which spare straps will fit. A 20 mm watch takes a 20 mm strap and nothing else. If you plan to swap straps, note this number before you buy.
4. Getting the bracelet to fit
Steel bracelets come longer than most wrists and are adjusted by removing links. Any watchmaker or jeweller does it in a few minutes, usually for very little. Leather straps are adjusted by the buckle — no tools needed.
Still not sure?
Tell us your wrist measurement and which watch you are looking at, and we will tell you honestly whether it will work. We answer within one business day. Contact us.