One thing that can hit you when you get older is misplacing you most precious items, such as your keys! Now with this handy little finder, never again will I forget where they are! Very easy to install app on your phone and then program your finder to your phone. The next time you can't find your keys, just hit your phone app and an alarm will sound on your key ring. Also, this comes with extra batteries, which is a new feature to key finders. The other brands once they die, they're done. This one allows you to replace the batteries which saves a lot of money in the long run. Also this would be excellent for other items as well!