My favorite watch had a scratch on it’s face and not wanting to spend on repair right away, I thought of searching the web if I can do it on my own. I found out that if the watch is made of acrylic, a type of plastic crystal, it can be repaired. To do: For light scratches, dab plain white toothpaste onto a clean cloth and rub the watch face. Rinse with a damp cloth, and repeat the process until the scratch vanishes. I have tried it and the scratch disappeared. 🙂
For deeper scrapes, you’ll need to bring it to a professional watch repair man. Have him take a look so he can recommend whether you need to replace the part.