I don't care what kinda glass they put on phones and watches they all seem scratchable. I use screen protectors on everything. I just wish they had tempered glass protection like I use on my phone.
There are 2 brands on Amazon I bought both skinomi is my favorite of the two. $6.95 for 6 protectors.
This is what i ordered. I actually got them for. 70 with free shipping when they had thier 90% off promo. They currently have 80% which is still a great deal.