The world's best-selling Bluetooth tracker just got 25% smaller. Tile Mate easily loops onto keychains or attaches to anything you don't want to lose so you can find it fastUse your smartphone to make your Tile Mate ring when it's nearby.Your Tile isn't where you left it?  You can anonymously enlist help in the Tile community. With over 5 million Tile devices sold, it is the world's largest lost and found networkFind your phone. Can't find your phone? Simply double press the button on your Tile Mate to make your phone ring -even on silent! Water resistant : Up to IP57 standards. Sound : 88 decibel melodySee where you had it last. The easy-to-use, free Tile app remembers the last time and place it saw your Tile, so if you left it somewhere, you'll always know where to lookBattery life:One year from shipment: Charging:None All activity measurements and calculations are estimates. Accuracy is affected by various factors including physiology, location of device, and different movements