Item Tracker Easily: This Air Tracker Tag only work with the Apple Findmy app (only with iOS 14.5 or over) and MFI certified. no need installed any other APP Simply activate sound playback when your item is within Bluetooth range (30m/100ft) and iPhone will give you pop-up reminder when exceed 100m/350ft enabling easy location. Alternatively conveniently pinpoint the nearest item's location on the 'Findmy' network map. Long Battery Life & No Mothly Fee:The bluetooth key tracking device key item finder is powered by CR2032 battery with super long standby time over 12 months and can be replaced easily for long-term use. Delicate and elegant appearance makes it look like an art of pieces. One time purchase for lifetime use without any monthly fee. Timely Reminders: when you install these GPS trackers case behind your phones keys pets and other stuff that are easy to lose they will sound or flash if your keys leave you beyond a certain range(100m/350ft) informing you to find the lost items in time besides they and your phone will alarm together when disconnecting and this function could be turned off in setting Worthy Gift Idea :The key locator item finder is designed in a lightweight smal size and coming with a portable keyring you can carry it to any place without any bulks or can put it or hang it to any stuff you needed as a item tracker bringing convenience wherever and whenever you are.A must-have and worhty gift for the family. Data Security: With the "Find My" network's advanced encryption you can rest assured that your location data and history are never stored publicly. All information about your location is anonymous and encrypted.Additionally Leaving your contact information in advance makes it easier for the finder to contact you. You can also share the location of your items with your family and friends via Find My APP. (The sharing function needs to be upgraded to iOS 14.5.):