【"Find My" Network Compatibility】 Using Apple's "Find My" network, compatible with iPhone, iPad, and Mac, you can quickly and accurately locate lost items. *This product is for iOS only and cannot be used with Android devices. Location updates depend on the number of Apple devices around the product (if there are few Apple devices nearby, updates may be delayed or temporarily suspended). 【Anti-Forgetfulness Alert】 By enabling "Notify When Left Behind" in the "Find My" app, you'll receive an instant alert when the tag and your smartphone are separated by a certain distance. Even if you accidentally leave something behind, you can quickly realize it and go back to retrieve it, preventing the loss of important belongings like keys, wallets, and bags, adding peace of mind to your daily life. 【Easy Finding with Sound】 Simply tap "Play Sound" from the "Find My" app, and the tag will emit a sound at a volume of up to 100dB, letting you know its location. It's easy to hear even in hard-to-see places like the bottom of a bag or the gap in a sofa, freeing you from the trouble and anxiety of searching. 【Replaceable Battery and Excellent Portability】 Uses a standard CR2032 button battery (sold separately) and allows for up to one year of use thanks to its low-power design. The battery can be easily replaced when it runs out. The AirTag itself is lightweight at only 7.9g and thin, and with the included two silicone straps, you can attach it to various items such as keychains, wallets, bags, and suitcases for easy carrying. 【Tracking Prevention Function to Protect Privacy】 If a tag is placed on your belongings by a third party, your iPhone will detect it and notify you. If the tag is not found after a certain period of time, it will emit a sound to indicate its location. All location information communication is anonymous and encrypted, and the history is not saved on the tag itself. Only the user can access the information. No one, including Apple, can track you, ensuring high privacy protection.