Compatible Devices: Tablets, iPod, iPad, iPhone, iOS Smart tags are items that help you locate lost or misplaced items by making a sound or notifying your smartphone of their location. By attaching them to important items like keys and wallets, you can save time and money on the extra procedures involved when something is lost. You can check the current location of the smart tag using the (Find My) app on your iOS device. Anti-loss tag Hxwlo, child GPS, small tracking smart tag, compatible with Apple's "Find My" (iOS devices only), anti-forgetting tag, GPS card, key finder, smartphone ringer, lightweight, small GPS transmitter, item finder, small GPS, discreet smart tracker, for lost children/elderly/dementia patients/dogs/cats/cars/smartphones/keys/bags/luggage/wallets/bags, battery replacement version. **Comes with spare replacement batteries.