I don't know how to review this in a fair way. I have not noticed any difference in myself but maybe there is? I would like to see proof that these devices actually work. Maybe I need to get blood taken and looked at under a microscope. If it comes out good then I would up the rating but I'm not feeling any different at the moment.

Works great, I also bought a backup, just in case.. I had a very small scratch on my watch glass because I didn't put the screen protector on right away, so don't wait!! Put it on immediately. With the screen protector, I can not see the scratch!

Excellent product for my W1 watch!

Husband doesn’t notice a difference and it’s been two months..