The new tile Pro is our most powerful Bluetooth tracker; Created for those who value high performance, durability and strong design Ring your things: Use your smartphone to make your tile ring when you misplace your things within 400 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 Pro is Battery life: Replaceable CR1632 battery is guaranteed for one year from activation; You can easily replace it yourself