We use only high-quality materials for all our products. For the case, we use sandblasted stainless steel, or more precisely, 316L surgical steel. This is especially pure, stable, anti-allergenic steel that offers exceptional wearing comfort. Our automatic watches are protected by sapphire glass and all our other watches are protected by sapphire-tempered mineral glass. This means that the glass has been coated with a layer of highly resistant synthetic sapphire glass. This ensures proper visibility in every situation and that the glass only scratches when exposed to rough external conditions.