Watch Glossary

Early luminous compound containing radium, historically used before safer alternatives were developed

Vintage radium-based luminous material formerly used on watches, now obsolete due to radioactivity

Lightweight composite material used in modern sports and racing watch cases

TAG Heuer's proprietary carbon composite material for lightweight, durable watch cases and components.

Rolex ceramic bezel insert technology offering scratch and fade resistance with color permanence.

Ceramic-based protective coating used on watch components for enhanced durability and corrosion resistance

Ceramic insert bezel technology providing superior scratch and fade resistance.

Hard, scratch-resistant material used for bezels, case inserts, and dial elements

High-tech ceramic material used for watch cases, providing scratch resistance and thermal stability.

Duration of light exposure required for photoluminescent materials to achieve maximum brightness

Rate at which case materials expand with temperature changes

Protective coating preventing oxidation of metal components