1. Sapphire crystal material has super high hardness

The Mohs hardness of sapphire crystal is as high as level 9, second only to diamond! Secondly, the wear resistance of sapphire crystal far exceeds that of ordinary glass (Mohs hardness level 5-6) and acrylic materials, and can resist scratches from sharp objects such as keys and gravel during daily wear. This super hard and wear-resistant characteristic allows the watch mirror to maintain transparency and cleanliness for a long time, making it a top tier wristwatch'Eternal freshness'The core guarantee!

2. Sapphire crystal material has good seismic and sealing performance

The complex movements of high-end watches require stable operation in harsh environments. The molecular structure of sapphire crystal is dense, and its impact resistance is more than 10 times that of ordinary glass. For example, the sapphire watch mirror of a diving watchCapable of withstanding deep-sea high pressureAt the same time, seamless fit with the watch case is achieved through precision machining to ensure waterproof performance.

3. The difficulty of sapphire processing technology and the symbol of brand value

The synthesis of sapphire requires purification of alumina crystals at a high temperature of 2000 ℃, followed by cutting and polishing with diamond tools. The processing of a single crystal mirror alone involves dozens of steps, and the cost is equivalent to that of ordinary glassSeveral times or moreThis high threshold craftsmanship has become one of the distinguishing features between high-end and ordinary watches.

The picture shows the complex process flow of the sapphire mirror of Xinyuan Optics

4. Optical performance and aesthetic presentation

The transparency of sapphire materials is generally not less than 84.5%, and if coated with an anti reflective film, the transparency can reach over 90%. In this way, the details of the watch dial can be clearly visible. Some high-end brands even create complex shapes such as arches, domes, and curved surfaces to showcase the visual art of light and shadow flow. As recently asRado SwitzerlandThe newly launched arch series watches under its umbrella are now in useConvex (i.e. arched) sapphire glass watch mirror, officially advertised as:The arch bridge that spans time, connecting classics and the future!

*The picture shows the newly launched Anatom arch series watches by Rado Switzerland today,

Image material comes fromOfficial Video Account of Rado Switzerland