Left Behind Reminder: If your key finder loses the Bluetooth connection with your for Apple device, you will be notified immediately. Whether you accidentally left your bag at the gym or forgot your keys at the office, our Left Behind Reminder will remind you to find your items in time. Find Nearby: Ring your tag when it is within Bluetooth range using the Find My app, or ask your Siri to find it for you. Click the Play Sound button and the device will make a "beep, beep, beep"sound. You can find your keys nearby based on the sound. Long-distance Find: When out of Bluetooth range, use the Find My app to view the latest location of the Item Locator on a map. Lost Mode: When adding an item, you can enable Lost Mode and leave your email or phone number on it. Once your tag is linked to your Apple ID, no one else can pair it with it. People who find your item can find your contact information through the Find My app to retrieve your item. Share with Friends and Family: With the Find My app, you can invite your family to let them know the location of your item. Only for Apple's Find My feature: Just use the pre-installed Find My app and add it to the Items tab. Then you can find it anywhere in the world using for Apple's network of millions of devices. Note: for Apple's Find My feature only works when used with iOS, iPadOS, or macOS devices. Waterproof with replaceable battery: Even if you leave it in the rain, you can use it on your outdoor trip with confidence. Colour:Black Material:plastic Package Contents: 1 x Smart Tag Tracker Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.