Nut 2 Smart Bluetooth 4.0 Anti Loss Tag to Track Child Pet Key Car Wallet Luggage etc GPS Finder AlarmNUT SMART TAG: is a small Bluetooth tracker that electronically connects with Apple or Android devices and alerts the user if the device is more than 30 meters awayANTI-LOST MODE: Both the Nut and your device will beep to alert you when they disconnect from each otherFIND IT MODE: Once paired to your host smart phone. This device effectively allows both your phone and the Nut tracker to call each other; In this mode, when the tracker is more than 30 meters away from the phone, it will disconnect and no longer alert youGPS TRACKER: You can track anything you attach the Nut to, with GPS via the app on your phone. If your bag etc. was stolen and the thief sets the alarm off, you can immediately go to the map on the app, find the last recorded position and start searching from there - it is a very valuble first lead for the search !!BATTERY LIFE: 4 to 6 months with an easily replaceable battery.