My son's bought me a Fitbit Charge HR for my birthday to encourage me to get out and exercise. Since i am retired and like to do a lot of handyman work, first thing I wanted to do was order a screen protector for my Fitbit. I researched and read reviews and settled on the Ace Armor Shield. When the product arrived and I started reading the instructions, it sounded like a lot to go through to put the protector on my fitbit. I followed the instructions, which turned out not to be as bad as expected, and in a couple of minutes i had the protector on. It's been on now for about five weeks and seems to be doing it's job. The protectors come with nine in a package, which is more than I need, but always nice to have extras on hand so you can change them if necessary. The small price you pay for these is well worth the protection you get.