Apple AirTag 
 
Key Features
 
Precision Finding: Uses ultra-wideband (UWB) technology with the U1 chip for highly accurate tracking, guiding you directly to your lost items with visual and haptic feedback on your iPhone.
Find My Network: Leverages the vast Find My network of Apple devices to help locate your AirTag, even when it's out of Bluetooth range. The network is encrypted for privacy and security.
Simple Setup: Effortlessly connects to your iPhone via Bluetooth. Just pull the tab and bring the AirTag close to your device to start tracking.
Play Sound: AirTag has a built-in speaker that can play a sound when activated to help locate your items when they’re nearby.
Long Battery Life: Powered by a replaceable CR2032 coin cell battery, providing up to a year of use.
Water and Dust Resistance: IP67-rated, making it water and dust resistant for everyday wear and tear.
Privacy and Security: All communications within the Find My network are encrypted to ensure only you can view your location data.
Compact Design: Small, lightweight, and easily attachable to keys, bags, or other personal items.