Watch Coatings: DLC vs. PVD
A watch's finish shapes its character. Black cases emphasize a sporty look, while bronze-colored finishes add a warm accent. But there is more to the finish than color: a high-quality watch coating can make the surface more durable and protect it from everyday wear.
The terms DLC and PVD frequently come up when discussing coated watches. What do they mean, which properties matter in everyday use, and what should you look for when buying a watch? A meaningful comparison starts with an important distinction: PVD describes a manufacturing process, while DLC refers to a specific type of coating.
What a Watch Coating Can Do
Stainless steel is a proven material for watch cases and bracelets. It is strong, corrosion-resistant, and, depending on the finish, can be professionally refinished. Adding a coating changes the color and can make the surface more resistant to abrasion and scratches.
Modern thin-film processes create extremely thin layers, often just micrometers thick in watchmaking. They barely change the dimensions of the case. Their properties depend on factors such as the coating material, how well it adheres to the underlying surface, and how the components are prepared.
The way the metal is finished still matters. Once coated, a polished surface looks different from a satin-finished or blasted one. A black case is therefore not necessarily low-glare: both color and surface texture determine how it reflects light. A dark, matte finish is particularly well suited to the functional character of a sports watch or tool watch.
DLC and PVD: The Key Difference
PVD stands for physical vapor deposition. The term describes a group of processes used to deposit thin coatings on components. The color, hardness, and wear resistance of a coating depend on the material and process used.
DLC stands for diamond-like carbon. It refers to carbon-based coatings that can offer high hardness and good wear resistance. This category also includes a range of compositions and coating types.
Depending on the type, DLC coatings can be produced using PVD processes or plasma-assisted chemical processes such as PACVD. "DLC vs. PVD" is therefore a simplified comparison. When choosing a watch, what matters is the specific coating used and the properties it offers.
PVD Coatings: A Wide Range of Colors and Finishes
In PVD coating, material is converted into a vapor under vacuum, for example through evaporation or sputtering. It is then deposited as a thin layer on the prepared component. Different processes can produce different coating materials.
This technology opens up a wide range of possibilities for watch design. Gold, bronze, gray, and black tones can be combined with different surface finishes. The underlying case finish continues to contribute to the overall appearance. The same basic case shape can therefore look sporty, understated, or classic, depending on how it is finished.
What Are the Benefits of PVD Coatings on Watches?
Suitable PVD hard coatings combine the desired color with increased wear resistance. However, the label "PVD" alone does not tell you how well a watch will resist fine scratches and abrasion. To assess that, you need to consider the coating material, the layer structure, and the quality of the application.
The Laco Atacama Quarz UTC demonstrates the functional benefits of a PVD coating. Its robust stainless steel case, unidirectional countdown bezel, and crown at twelve o’clock feature a black PVD coating. The low-reflection finish complements the watch’s instrument-inspired design and gives it a distinctive, cohesive appearance.
What Are the Limitations of a PVD Coating?
Even a high-quality coating can be damaged. A deep scratch or hard impact can reach the base material. If bright stainless steel is exposed, the mark is especially noticeable on a dark case. Areas frequently exposed to wear include the bezel, lugs, clasp, and protruding parts of the case.
Blanket statements such as "PVD is always more scratch-resistant than stainless steel" or "PVD is inherently better than electroplating" oversimplify the issue. Both terms cover a range of coating types. A meaningful comparison requires details about the actual coatings used.
DLC Coatings: High Surface Hardness for Sports Watches
A DLC coating has an amorphous, or noncrystalline, carbon structure. The term "diamond-like" refers to certain material properties and the proportions of different types of carbon bonds. It does not mean that the watch case is covered in a layer of diamonds.
For watches, the combination of high surface hardness and good wear resistance is particularly useful. A carefully applied DLC coating can help reduce minor wear marks, making it a good fit for sports watches. Its actual durability depends on the entire coating system and the material underneath.
Why Is DLC a Good Fit for a Sports Watch?
A sports watch should perform well in everyday use and during outdoor activities. Its surface comes into contact with clothing, equipment, and other objects. A durable DLC coating helps meet these demands while also giving the case a distinctive dark finish.
In the black Laco sports watches from the Skorpion collection, DLC coats the stainless steel cases of the Amazonas, Mojave, Atlantik, and Himalaya models. The deep black finish works with high-contrast dials and colorful accents to create a sporty overall look. Here, the coating is part of a design focused on function and durability.
Legibility still depends on how the dial, hands, luminous material, and crystal work together. A black case coating does not automatically improve it. Likewise, a smooth feel to the touch does not directly indicate a coating's hardness or quality.
Can a DLC-Coated Watch Get Scratched?
Yes. High surface hardness does not protect against every type of damage. Contact with hard materials, intense localized pressure, or deformation of the base material can damage a DLC coating, too. Visible marks are possible, especially on exposed areas.
The DLC label alone also does not establish how a coating ranks against all PVD hard coatings. Hardness, adhesion, and wear characteristics vary with composition. Claims about durability should therefore refer to the specific coating used. The same applies to price: the abbreviation alone does not tell you what price premium to expect.
DLC or PVD: What Matters When Comparing Watch Coatings?
When choosing a coated watch, start with how you plan to use it and the look you prefer. Suitable PVD coatings offer a range of options for bronze- or gold-colored cases. For black sports watches, DLC is an established option that can combine a dark finish with high wear resistance.
The overall build quality of the watch matters more than any single buzzword. Are the surfaces evenly finished? Does the coating work well with the case, crown, and clasp? Does the manufacturer clearly explain which material is used? These questions are more useful than a general promise of hardness.
A coating is no substitute for robust overall construction. Shock protection, water resistance, and reliable operation depend on other components. A black watch is therefore not suitable for every sporting activity simply because of its color or coating.
Caring for and Refinishing Coated Watches
Use a soft, clean cloth for routine care. Carefully remove loose particles first so they are not dragged across the surface as you wipe. Whether the watch can be cleaned with a damp cloth depends on the manufacturer's instructions, its water resistance, and the strap or bracelet material.
Avoid abrasive polishes, scouring products, and stiff brushes on coated cases. They can alter the surface or wear away the coating. Fingerprints and residue on dark surfaces are simply surface contamination, not necessarily signs of damage.
A visible scratch on a coated watch generally cannot just be polished out. Recoating requires professional assessment and is not an option for every model. Before arranging refinishing, check with Laco Service to find out what is possible for your watch. A localized touch-up usually cannot restore a uniform color and finish.
The Right Coating for Your Laco
Laco combines a watchmaking tradition dating back to 1925 with functional design and distinctive timepieces. The right finish depends on the model: a bronze-colored PVD coating can emphasize the historical character of a pilot watch, while black DLC highlights the sporty look of a Skorpion.
Consider DLC and PVD in the context of the watch as a whole. What matters is the specific coating used, careful workmanship, and the qualities you value in everyday use. That is how you find a timepiece whose engineering and design suit you.