I put this screen protector on my Vivoactive 4S and I was very satisfied. You can't tell there's a screen protector unless you're specifically looking for bezels. The touchscreen functions are just as responsive as before the protection was attached. Application was very easy with no bubbles. It takes time to stick to the watch face, so plan to apply it when you don't need to wear your watch. I applied mine in the evening and left it on overnight.
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