I bought this for my boyfriend who is constantly losing track of his keys, phone, wallet and pretty much anything else he puts his hands on. Wish I bought it years ago because this thing is AMAZING!!! He put one right on his keys ring and another fit perfectly inside his wallet. We taped another one to our TV remote. Safe to say that he doesn't lose his stuff anymore and we're both less stressed because of it! No more tearing apart our entire house trying to find things, no longer getting into stupid fights about it, and now we make it to places on time since we can find the car keys. We have a 2 story house and it's a little hard to hear the locator when you're on the opposite floor, but walking around pressing the button for a couple minutes until you hear it totally beats the stress of searching for hours any day! Highly recommend for anyone who loses things often! I promise, you won't regret this purchase!