Sizing Guide
Straps are measured in milimeters. You need to know two dimensions: width and length.
Lug Width
Width is the distance between the lugs, where the strap meets the watch. To determine your width, you can take a ruler or caliper, and measure the width of the part of the strap that uses spring bars / screws to attach to your watch case. Measure this in millimeters.Width is expressed, for example like this: 20/18 (20mm wide by 18mm wide). This first number (20mm) is the width of the strap between the lugs of the watch case. The second number (18mm) is the width of the strap at the buckle.
A “straight” strap is one that is the same width at the lugs and the buckle, i.e 20/20 (20mm wide at lugs by 20mm wide at buckle). While a “tapered” strap is one that tapers in width from the lugs to the buckle, i.e 20/18 (20mm wide at lugs by 18mm wide at buckle).
Strap Length
There are two lengths required, the tail end (length of long section), and the buckle end (length of short section, excluding buckle). Length is expressed, for example like this: 120/80. The first number (120) is the length in millimeters of the tail end with holes. The second number (80) is the length in millimeters of the buckle end.
The strap length suggestion is based on wrist size. To determine the your wrist length, follow the guide below.
Determine your wrist size/strap length via one of the following ways:
Option 1 - Measure your wrist with a soft tape measure by wrapping it around your wrist at the exact area you wear your watch.
Option 2 - Wrap a piece of thread around your wrist where you wear your watch and make a mark. Next, lay the thread out and measure the distance from the starting point to your mark on the thread.
The table below is an excelent place to start for help you decide your size length order. Wrist sizing estimated for use with a standard 40mm dial watch with a ~50mm lug-to-lug length.
Standard: 120/80mm - For most 6.75 - 7.75 inch wrists
