A convenient anti-loss buzzer that can track the location of luggage and children. - Color: Black - Function: Prevents loss of luggage - Size: 52mm x 31mm x 11mm Thank you for viewing. This is a GPS tracker that helps prevent the loss of bags and wallets, and also helps to keep an eye on children and pets. The effective range is 25 meters, and it uses a CR2032 button battery. It's easy to set up, just install the app and pair it with your smartphone. #GPStracker #PreventingLuggageLoss