ATUVOS Smart Bluetooth Item Finder 2 Pack, Compatible with Apple Find My iOS Key

【Left Behind Remind and Lost Mode】: Avoid losing your belongings in the first place with instant left-behind alerts via the “FIND MY ”app. If the ATUVOS locator is lost, turn on Lost Mode in "FIND MY" and you will be automatically notified when it is detected by the "Find My" network.

eBay