I have been adverse to using screen protectors on my last 3 smartphones because I prefer the feel of the naked screen. I'm very careful with my phones and all of them have survived without any noticeable scratches on the screens. When I got my Moto 360, I didn't plan to use a screen protector on it either for the same reasons. But I'm finding a watch is more susceptible to accidental scratches. I got a very faint one on my watch, did some research and decided to go with the Brilliant screen protectors. They're the officially recommended protectors by Motorola and you can get them at Best Buy or online at Power Support. They apply easily, are virtually invisible, fit well, have a smooth feel close to naked glass, and seem to be pretty tough. You also get 2 in the package it comes in for $14.99. I'm so impressed with them that I actually ordered their protectors made for the Moto X.