This is a fabulous product. I purchased the Watch Shells for my Rolex GMT 18k Pepsi Meteorite and Patek 5712.
The result is almost invisible and it gives me the confidence to wear either watch at any time without worrying about scratches.
This is especially true on the Patek 5712 where the bezel is unprotected and any scratch really shows.
A word of caution...take a lot of time to put the protective covering on your watch. Do one section at a time (watch head, bracelet, sides, etc.) and give at least 2 hours to dry. I did my watches over a 4-6 day period of time and the result is fabulous.