The Proximo Tag is designed to help you find your tagged valuables easily from your Apple iPhone or Samsung Galaxy. Download the free Proximo App to find your Key Fob easily by sounding an alarm so you won't lose your keys again. It also has an LED visual alert to help you find your keys in the dark. Use the app to monitor the six-month battery life on the Key Fob. The Last Seen feature shows you a map with a pin that identifies the last place your keys were located. The proximity meter gives you an estimate of the distance from your missing item. Proximo will alert you the moment you leave your Smartphone or Key Fob behind. Also, set up Quiet Zones so you can set "Don't Disturb Me" areas. It is compatible with iPhone 5s/5c/5/4s, Galaxy S phones and Galaxy Note 3.