Four Mirror for Watches

Watch mirror is generally divided into four categories: plastic mirror, glass mirror, crystal mirror, sapphire crystal.

Is now a mention to buy watches, "Sapphire" has become a big gimmick?!

In fact, the so-called sapphire crystal, commonly known as "Indian cream" is not made of natural sapphire. But by the fine alumina powder as raw material, in certain high-temperature furnace to form Celsius sapphire crystal block, and then only after numerous operations on the watch made of pure sapphire crystal mirror unparalleled, with high resistance to wear and corrosion effects .

Sapphire crystal hardness second only to diamonds and Gao Shi, equivalent to seven times that of steel, but it does not mean that it will not be scratched! Sapphire crystal mirror is not easy to wear, rather than never wear.

With particular attention to diamonds, terrazzo, sandpaper, nail-down of the granite surface, concrete walls so as to avoid scratches the surface.

Ever since the sapphire crystal, does give us a lot of convenience. However, everything has two sides, Ha ha! ! Because of its high hardness, high-density, so fragile and easy to crack.

PS: ceramic, tungsten steel also has the same advantages and disadvantages.