Ideal Compatibility: The Airtag Keychain is made of high quality PU leather and perfectly compatible with Apple Airtag 2021. ( Noticed : AirTag not included ) Overall protection: The AirTag case made of anti-shock PU leather provides protection for the Airtag against scratches, drops and avoids loss, thus extending the service life of the Airtag. The case adapts perfectly to the Airtag. Airtag Key Holder: this aluminum key holder is waterproof, anti-corrosion, robust and unbreakable. It's easy to securely clip the AirTag to keys, wallets, pet collars, backpacks or other valuables. Signal Stability: Thanks to its semi-enclosed design, Bluetooth connectivity, cell phone signals and AirTag sound are not interfered with. So don't worry about interference with your Apple Airtag signal. Easy to hang and unhook: This AirTag Case is very easy to wear and very easy to hang and unhook. (Includes 4 Airtag PU Leather Keychain)