FAVOLCANO Mini Nut 3 Smart Tag Bluetooth GPS Tracker Key Finder Locator Sensor Alarm Anti Lost Wallet Pet Child Locator (Blue) When a NUT is attached with your car, the APP will record where your car is parked and show you the location on the built-in map Alerts will be set off both on your cellphone and NUT once the two are separated to a certain distance You may pair your smartphone with 6 NUT tags at the same time to manage various belongings Super-thin body with simple modern design makes it easily fits into your wallet, purse and key rings, etc Advanced Bluetooth 4.0 provides super long battery life with one CR2032 button cell