Apple AirTag

AirTag. Keep track of your keys, wallet, luggage, backpack, and more, all in the Find My app. Play a sound on the built-in speaker, or say "Hey Siri, find my gym bag." With select iPhone models, Precision Finding can lead you right to your nearby AirTag.¹ If it’s farther away, hundreds of millions of Apple devices in the Find My network can help track it down. All anonymously and encrypted for privacy.

¹Precision Finding compatible with iPhone 11, iPhone 11 Pro, iPhone 11 Pro Max, iPhone 12, iPhone 12 mini, iPhone 12 Pro, and iPhone 12 Pro Max.
²Testing conducted by Apple in March 2021 using preproduction AirTag units and software paired with iPhone 11, iPhone 11 Pro, iPhone 11 Pro Max, iPhone 12 mini, iPhone 12, iPhone 12 Pro, and iPhone 12 Pro Max units running preproduction software. Battery life based on an everyday use of four play sound events and one Precision Finding event per day. Battery life varies with usage, environmental conditions, replacement battery manufacturer, and many other factors; actual results will vary.
³AirTag is splash, water, and dust resistant and was tested under controlled laboratory conditions with a rating of IP67 under IEC standard 60529 (maximum depth of 1 meter up to 30 minutes). Splash, water, and dust resistance are not permanent conditions and resistance might decrease as a result of normal wear. Refer to the Safety and Handling documentation for cleaning and drying instructions.