Apple AirTag (1 Pack)

AirTags use audible beeps through the built-in speaker when in Bluetooth range to help you locate the device they are attached to
They offer NFC and Bluetooth LE connectivity, apart from featuring an accelerometer
The AirTags also feature Siri support and a claimed one year of battery life
AirTag is an easy way to keep track of your stuff
Attach one to your keys, slip another one in your backpack