December 3, 2025, 1:30 pm | Read time: 2 minutes
The Apple Watch Series 10 is once again sparking discussions. After the iPhone 17 faced criticism for discoloration and a sensitive back, Watch owners are now reporting issues with the coating. The Jet Black color variant is particularly prone to chipping paint and corrosion. Social media and forums are filled with user experiences on the matter.
According to the portal “Techradar,” affected models show small silver spots on the underside after a few months—precisely where the watch rests on the skin. Corrosion marks and localized peeling have also been reported. Users describe the problem similarly, ruling out mechanical scratches or impacts as the cause.
Much points to a chemical reaction between sweat, moisture, and the coating. Ironically, the Series 10 is aimed at athletes and those who want to wear their watch continuously. Currently, the “Jet Black” variant, known as “Diamantschwarz” in German, is particularly affected.
Apple Responds Accommodatingly
There is good news for affected buyers. As users on platforms like Reddit report, Apple employees in stores are familiar with the issue. Apple often replaces affected watches free of charge—even without an AppleCare+ contract.
The only requirement is that the device is still under warranty. The replacement is usually a service unit: a refurbished device with a new case, new display, and new battery.
Also of interest: Foldable Smartphone Without a Crease—Apple Achieves Breakthrough With iPhone Fold
What to Check
If you own an Apple Watch Series 10 in Jet Black, you should closely inspect the underside of the watch. Visible spots or rough areas that cannot be wiped off are typical signs. In such cases, direct contact with Apple Support or an appointment at an Apple Store is recommended. It is currently unknown whether Apple has improved the coating in newer production series.