
Purchased for my Fitbit 4 charger which I wear to track both daily activity and sleep. The max I don't carry is 20-30 minutes a day while I charge it. This product requires you not to wear the device for 8 hours while the product dries, which I don't want. Unfortunately, I only discovered this after spending a long time searching for instructions on their website. No "installation instructions" were provided, likely due to an apparent attempt to drive traffic to their website or download their app. Nobody needs an app for such a product. Finding instructions for my device was not easy. I had to infer a similar device as Charge 4 wasn't on the list. At that point I decided this product wasn't for me and I wish I knew it takes a lot more effort than just staying at a blank screen and working with a bubble or two. I accepted that I had wasted my money and decided to live as usual, but it didn't end there. A few weeks later, I received a mysterious, unidentified letter that said "gift card included”. Why on earth did you write on the envelope that there was a gift certificate inside?! It was a coupon that could be used if you leave a review. Remember this is the second email I have received from this company. If I buy something from Revain, I do NOT want your company to use my information to spam you. This company seems more interested in artificially increasing traffic and reviews than creating a user-friendly product or committing to some level of transparency.

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