Similar to the Apple AirTag, this device utilizes the Apple product network to provide location information via the "Find My" app. Size: 36mm Weight: 11g The size is almost the same as the AirTag. Depending on the accessory, those for AirTag can be used as is. This product is compatible with all iOS devices, but requires iOS 14.5 or later. No separate app download is required, and it can be linked with Apple's "Find My" app. You can locate lost items using the "Find My" network of iPhone, iPad, and Mac devices. Note: ① It is recommended to use the latest version of iOS, iPadOS, or macOS. ② Not compatible with Android smartphones. By using the "Play Sound" function in the "Find My" app, the key finder will emit a sound, allowing you to quickly find items left behind by the sound. The location of the locator can also be recorded. The "Find My" app records the last connected location, which helps you find it. You can open the map in the app and estimate the approximate location of the lost item. Unlike Android key finders, this key finder provides a wider and more accurate location information through the Find My Network and Bluetooth, and can be used at home or on the go. Within the Bluetooth range, you can receive notifications on your smartphone via "Find My". If you are out of range, you can search for the item's location in the Find My app. The smart key finder is small and lightweight, making it convenient to carry. It can be attached to items that are easily lost, such as keychains on children's bags, pet collars, keys, wallets, remote controls, glasses, mobile phones, dog collars, etc., to check their location in real time and prevent the loss of important items. Another way to use it is to hide it in your car or motorcycle to prevent theft.