True WaterproofThis Airtag case features a waterproof construction and loop so you can put them in water. Compatible with Apple Airtag (not included). Ultra Durable Airtag HolderEquipped with 4 special screws to close the case, the air tag will never fall off the case. Requires a special screwdriver (included) to open, preventing theft. Anti-Scratch and Shockproof: Fully covered Air Tag, soft, elastic, and wear-resistant TPU material. There are raised parts at the four corners of the shell, which can prevent falling. Keychain DesignThe keychain design is anti-lost, making it easy to hang the Airtag on your bag, key ring, keys, dog collar, backpack, suitcase, school bag, etc. Signal and SoundNo signal blocking, the sound may be a little quieter than the unboxed gas mark.