"When I first got R621, its mini round shape attracks me, then I found it very easy operated.
You can tag the key finder R621 on your keys, wallet, bags, pets or other belongings. A free key finder App can be download on Google Play and Apple Store. when your keys is our of the range, the app will push a sound to remind you and you will find a pushpin on the map. It can inform you when and where lost the tile key finder. till now, I have never lost my belongings."