Ring your things: Use your smartphone to make your tile ring when it’s nearby but out of sight with a 200 feet Bluetooth range. Find your phone: Can't find your phone? Simply double press the tile button on your tile to make your phone ring even when it’s on silent. See it on a map: The tile app remembers when and where you left something behind. Use community find: if you lose your tile you can anonymously recruit the entire tile community to help you find it; The tile app running on their phones will send location updates to your app letting only you know where your tile is. Battery life: Mate has a replaceable CR1632 battery which is guaranteed for one year from activation; You can easily replace it yourself; slim has a built in battery which lasts three years.