Easy to apply and durable. HOWEVER... while I had thoroughly cleaned the watch surface and was being especially careful, with the removal of the film and the placement of the glass, pockets formed that never went away!

Unfortunately, both screen protectors in the package had the same fit.

Positive:
+ Fits perfectly
+ Easy installation
+ Very nice feel (personally, I like it more than the original. It is softer and gives a more refined feel)
+ It comes with two spare ones inside!
+ Even when it hit a stone and the first one broke, the watch did not suffer any damage. This cracked but stayed in place without losing touch functionality!

Luckily it came with 2 because the first one went to waste. The installation was very difficult so that it would sit exactly right because you have nowhere to hold it, resulting in dust getting all over it. The second one fit well. Now time will tell.

They fit well on both the GT5 Pro and the GT6 Pro,
They don't leave fingerprints, so the screen is always clean.

Very good screen protector. It does not affect the touch at all, it does not affect its colors. Overall, it seems durable after 2 months of use. Worth buying!
Update: after a short period, unfortunately both screen protectors broke. I tried others as well, but unfortunately those broke easily too.

I took the risk to try it on the GT4 46mm (which essentially has the same frame as the GT5) and it fits perfectly compared to others that are more expensive!!! Time will tell for durability.