1.Only Works with Apple Find My: Just use the pre-installed Find My app and add it to the Items tab. You can then locate it anywhere in the world using Apple's network of millions of devices. Note: Apple Find My features only work if used with an iOS, iPadOS, or macOS device. 2.Left Behind Remind: If your key finder ever disconnects from your Apple device's Bluetooth connection, you'll receive instant notifications. Whether you accidentally leave your bag at the gym or forget your keys at the office, our 'Left Behind Remind' will be your prompt reminder to retrieve your items. 3.Find Nearby: Use the Find My app to ring your luggage tracker when it's within Bluetooth range, or ask your Siri to find it for you. Click the 'Play Sound' Button, the tag tracker will make a sound 'di di di'. You can according to the sound find your keys when nearby. 4.Find Far Away: When outside of Bluetooth range, use the Find My app to view your 'Item Locator's most recent location on a map. 5.Lost Mode: When you add the item, you can enable the Lost Mode, and leave your email or phone number on it. Once your Tag is linked your Apple ID, so no one else can pair to it. A person who finds your item can through the Find My app to find your information to retrieve your item. 6.Share with Friends and Family: function for iOS 17. With the Find My app you can invite your family to let them know the location of your items too. To use this function, please make sure that your iOS system has been upgraded to iOS 17 in advance. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.