Color on fine elegant metal watches DLC diamond-like carbon coating.

How are the colors of the colorful metal watches on the market made? The color of the metal watch is produced through the electroplating process. The early water electroplating technology used the principle of electrolysis to pass a direct current in the electroplating solution to deposit metal ions on the surface of the workpiece. The vacuum plating technology now more commonly used adopts the principle of Physical Vapor Deposition (PVD), injecting gas in a vacuum state to separate the target material into molecules, so that the conductive workpiece can adsorb the molecules to form a uniform and smooth film layer on the surface. The hardness of the coating, the anti-fouling of the surface, the durability of the performance, and the performance of vacuum plating have been greatly improved, and it is also more environmental friendly than electroplating.


Coating processing of watches

Generally speaking, physical vapor deposition (PVD) is divided into three types: Vacuum Evaporation, Sputtering, and Ion Plating. Among them, Ion Plating is considered to be the best for adhesion and durability. It cleans the surface of the workpiece in the form of sputtering, and then coats the surface of the workpiece using the characteristics of both vacuum evaporation and sputtering. The dissociated substances and gases adhere to the watch case. The film deposited by this process is very thin, which will not affect the thickness of the watch case. Japanese watch brands often emphasize that their use of IP technology is a good way to enhance the value and beauty of their watches.

The mainstream of watch coating

In recent years, the customer base of fine elegant watches has attracted the younger generations, and the design has become more and more sporty, with a visual presentation is of strength and energey. Many well-known brands such as Breitling, BALL Watch, VULCAIN, CHOPARD, etc. have launched diamond-like carbon watches. The color is mainly black, which is characterized by the advanced process of vacuum electroplating-Diamond-like carbon coating (DLC). This produces an amorphous carbon element close to diamond, which strengthens the protection of the watch surface. Recently, BVLGARI and G-SHOCK also released diamond-like carbon watches.

Bvlgari Bvlgari Series. Sourc/Bvlgari

Bvlgari's Bvlgari Bvlgari series watch, the entire watch is treated with DLC diamond-like carbon high wear-resistant coating, and the neutral pure black design is very stylish. The Octo Roma WorldTimer world time zone watch has two styles: a stainless steel blue face model and a DLC diamond-like carbon black face model. The DLC-like diamond carbon model has a 41 mm black sandblasted DLC-like diamond carbon treated stainless steel case.

Octo Roma WorldTimer World time zone watch. Sourc/Bvlgari

G-SHOCK uses Tokyo in the twilight as an image to convey the light and hustle and bustle of the city, and announces a new design in which purple and blue are interlaced from the case to the strap. Diamond-like carbon coating (DLC) is adopted on the spiral bottom cover, which will be more durable and will be on sale from September 2021.


The surface layer of the Diamond-Like Carbon Coating (DLC) has the characteristics of high hardness, corrosion resistance and low friction coefficient to meet the different demands of individuals and the varving environment conditions. Although diamond-like carbon coating (DLC) has a higher cost than the general PVD, it is being adopted for use in all watches from high quality brands to more common affordable brands. It can be seen that the excellent performance of the diamond-like carbon coating is recognized and increasingly popularized becoming more popular..

Dah Young Vacuum-DLC Diamond Carbon Meter Solution

Applicable Equipment

Cathodic Arc Diamond-like carbon Coating Machine

Actual Case

DahYoung Vacuum DLC diamond-like carbon coating × Bright.Cut geometric carving method, presenting Taiwan's exquisite craftsmanship.