Find Your Lug Width

Strap Size Guide

To ensure a precise and comfortable fit, please refer to the measurements below as illustrated.

A — Lug Width

The inner distance between the watch lugs where the strap is attached.
This is the most critical measurement when selecting a strap. Measured in millimeters (mm).

Common sizes: 18mm · 19mm · 20mm · 21mm · 22mm

B — Buckle Width

The width of the strap at the buckle end.
Straps are typically tapered from the lug to the buckle for a refined, balanced appearance.

C — Strap Length (Buckle Side)

The length of the strap section attached to the buckle, measured from the lug end to the buckle.
This dimension influences overall fit and wearing comfort.

D — Strap Length (Hole Side)

The length of the strap section with adjustment holes.
Designed to accommodate different wrist sizes while maintaining a clean, elegant profile.

Notes
Always confirm the lug width (A) before placing your order.
If you are replacing an existing strap, the size printed on it usually indicates the lug width.
For assistance, the CERNIR team is always available to help you choose with confidence.