With these great tiles, you download an app to your smartphone and sync/connect your tile and select your desired settings, which includes a range detector and lost alarm. You then attach it to your desired item and your set. With an anti-lost alarm having a range of up to 15 metres it is perfect to prevent the theft of your wallet/purse or mobile in crowded situations and events. GPS Last location finder. When synced and pressed it will record your last location, so if you leave it in your car you will be able to use the app to pinpoint locate your car if you lose it. 2-Way searching, if you lose the item your tag is connected to such as your house keys, you can set the alert sound off from your phone to help you find them. Please note you can use the finder application even when the app has not been running, for the anti-lost aspect you need the app running in the background. Bluetooth 4.0 Anti-theft/Anti Lost. Features : Emits a beep sound when activated by the e-Tracing app (free to download) Works up to 75 feet away Standby time: up to six months Voice recording Selfie remote button Package include: Aquarius Key Finder, Silver | AQUARIUS Key Finder' Anti-Lost Alarm with GPS Finder, Silver