I bought this for Android and learned it is compatible with Apple only. Ultra slim KeySmart SmartCard wallet tracker. Works with the Apple Find My app so you can see your wallet on a map, play a sound, get left behind alerts, and use Lost Mode to show your contact info. Recharges on any Qi wireless charger. Up to five months battery per charge. IPX8 water resistant. About credit card size and roughly 2 mm thin so it slides into any wallet slot. Clean and ready to ship new open box Great for Wallets, ID badges, passport wallets, luggage tags.