Note : This is a Bluetooth tracking device, and not a real time GPS tracking device. It does have the advantages (superb battery life, and extremely sleek Build) & limitations (range ~30 feet indoors, ~60 feet outdoors) of Bluetooth low energy (BLE). This makes it perfect for items we tend to misplace within our homes or offices, like keys, wallet, glasses, camera, remote, earphones, or simply anything that you can attach it to, and then easily ring and find them! Find lost items in seconds using TrackR! The wireless coin-sized tracker device attaches to commonly misplaced items. Using the iPhone or Android TrackR app, the user can quickly locate their lost or misplaced items. Find those missing keys in the morning by causing them to ring and using the app's distance indicator. If you can't find a phone that is on silent, press the button on the Tracker device and cause the phone to ring, even if it is on silent!