Feature:1. Ultra Thin and Portable: Wallet finder is super thin and no more than two bank cards thick, lightweight and easy to carry, you can easily put in a wallet, key bag or anything you need to track.2. Wide Compatibility: Wallet finder is compatible for iOS, for OS X and for watchOS, so that any phone, notebook, watch can easily connect loss preventer, to meet your various needs.3. NFC Access Card Function: Multi functional item tracker also supports NFC access card function. After simple setup, you can copy the access card information, making travel more comfortable and convenient.4. Long Battery Life: Built in 100mAh lithium ion battery provides extended usage life. Even in environments without power sources, it can safeguard your belongings for a long time, eliminating the hassle of frequent charging.5. Wireless Charging: Simply place the card style wallet tracker on the wireless charging pad for easy and efficient charging, adding convenience to your life.Specification:Item Type: Wallet Tracker CardMaterial: ABSNFC: SupportedCompatible Systems: for iOS, for OS X, for watchOSBattery Type: Built in 100mAh Lithium ion BatteryApp: for Find My.Package List:1 xWallet Tracker Card 1 x User Manual