It is specially designed for the Apple Airtag GPS tracker, suitable for small animals like cats and dogs. The Airtag collar comes with a waterproof and shockproof case. Small collar designed for cats and small animals, retractable and out of reach of pets. Safety Collar - The collar is designed with a snap-fit safety buckle, the round safety buckle for The cat’s face can be adjusted to avoid choking and punch injuries, and can be easily released when you pull hard, which makes your pet safer when walking around the house. < p>Adjustable necklace size: the length is adjustable, minimum length 22cm, maximum length 34cm. 1cm wide, fits most puppies and small animals Packing List: 1 * necklace We only sell necklaces, not other items in the picture. Due to the differences between different monitors, pictures may not reflect the actual color of the item. Due to manual measurement, please allow slight errors in size.