SÖNER's Library of Inspiration

The Complete Guide to Anti-Reflective Coating on Watch Glass

Anti-reflective coating is one of the most practical features on a modern watch crystal — and one of the least understood. It is the reason a white dial reads clearly in bright sunlight ...

How Does an Automatic Watch Work? Complete Guide

How Automatic Watch Works The art of watchmaking is a centuries-old tradition that combines precision, craftsmanship, and innovation. One of the most fascinating aspects of this tradition is the a...

What Is a Water-Resistant Watch? ATM Ratings Explained

Water resistance is one of the most misunderstood specifications on a watch. The numbers on the caseback or dial do not mean what most people assume. This guide explains what ATM ratings actually...

How Watch Lume Works: The Complete Guide

The short answer: watch lume is a photoluminescent material applied to dial markers and hands. It absorbs light when exposed and re-emits it in the dark. The brighter and longer the charge, the bet...

Is Sapphire Glass Good for Watches? The Complete Guid

Quick answer: Yes. Sapphire crystal is the most scratch-resistant watch glass available, second only to diamond on the Mohs hardness scale. A watch with sapphire crystal maintains optica...

Understanding Vickers Hardness in Watch Steel

Vickers hardness (HV) is the standard measure of steel hardness used in watchmaking. It determines how resistant a watch case is to scratching and surface deformation under daily wear. Understand...