Overspeed "White Face" / White

THE CASE of the ARPIEM OVERSPEED is made of 316L stainless steel. Its characteristics include a near-total absence of magnetism, which therefore does not interfere with the movement's operation, and a very low carbon content (less than 0.35%) which makes it particularly resistant to corrosion and wear. A water resistance of 10 ATM is provided. The watch's crown is screw-down.

THE WATCH is assembled in France in Bordeaux

DLC CASE FINISH: The DLC, Diamond Like Carbon, coating is a material combining the structure of graphite carbon with that of diamond and a variable quantity of hydrogen deposited under vacuum in thin layers. Its name refers to the qualities of diamond found in DLC: wear resistance, durability, and a low coefficient of friction. Thanks to these qualities, it is used in the design of drilling tools, engines, the optical industry, and of course, watchmaking. The DLC treatment of the black OVERSPEED case provides it with shock and wear resistance far superior to that which would have been obtained with a classic PVD coating.

THE DIAL: the OVERSPEED is a single-hand watch that must therefore ensure timekeeping on its own. Each hour marker is divided into 4 markers of 15 minutes. Each 15-minute marker is divided into 3 markers of 5 minutes.

THE MOVEMENT: MIYOTA automatic caliber 9039. Mounted on 26 jewels. Frequency = 28,800 Hz.

THE SAPPHIRE CRYSTAL: this is the best quality crystal available on the market. It is actually an aluminum oxide crystal and not glass. Even though it is produced synthetically on an industrial scale, it possesses the same chemical composition and physical properties as natural sapphire. Its main virtue is its scratch resistance. On the MOHS scale, graded from 1 to 10, which evaluates the hardness of minerals, it is ranked at 9; only diamond is harder and ranked at 10. Most minerals constituting our everyday objects are between 4 and 7 on this scale.

ANTI-REFLECTIVE TREATMENT: The crystal is treated with 6 layers of anti-reflective coating, which aims to limit light refraction on the sapphire crystal for perfect perception of colors and materials (the greater the number of layers applied, the lower the light refraction).

CASE BACK: this is equipped with a sapphire crystal, revealing the engraved rotor of the automatic movement