They have a speaker that plays a sound randomly every few hours when it hasn't been near the owner's device in a while. https://support.apple.com/en-us/HT212227

They have a speaker that plays a sound randomly every few hours when it hasn't been near the owner's device in a while. https://support.apple.com/en-us/HT212227 https://support.apple.com/en-us/HT212227