Easy Link: Simple one-click setup instantly connects wallet tracker with your iPhone or iPad. Find Your Important Items Easily: The device has the same chip technology, allowing you to use the "Play Sound" button in the Find My app to locate your item. Your Privacy Is Important: All communication with the Find My network is anonymous and encrypted. Location data and history are never stored on the wallet tracker. Low Power Consumption: Equipped with a lithium battery. If not used frequently to play sound, each battery can last up to 30 months. Color: Black Material: Plastic Package Contents: 1 x Wallet Tracker Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to vary slightly from the real thing. The measurement allowed error is +/- 1-3 cm.