It already paid for itself from the first days because the phone fell on a concrete floor and the case saved it. The side that shows letters in front is obviously a sticker, but I made the clock very small on the lock screen and indeed, without opening the case, you can see it through the plastic! The plastic is semi-transparent black at that point, and it's convenient to see the time; I don't know if there are also themes you can download that might display it even better.
One of the biggest advantages and the reason I chose it is because it's a very slim case and it fits well in small bags and pockets.
Inside, it has two little stickers that "stick" to the screen and keep the case from opening; I don't think it has a magnet, and the package also includes extra stickers in case these come off, but I don't think they are well-stuck and are thin.
So for the money, I fully recommend it! I like that it also has a variety of colors and stands out because it's important to distinguish your phone so you don't lose it.