1.- The integrated design of the AIRTAG dog collar prevents the AIRTAG from falling off or being bitten. Compared to other air tag holders, our lighted dog collars are more cost effective and do not require the purchase of additional dog collars or Apple AirTag holders. 2. Advanced luminous dog collar with thinner and brighter TPU fiber, 30% brighter than other similar products, making your dog safer at night. The Apple Air Tag Dog Collar does not get hot after prolonged use and protects your dog’s neck from burns. 3.100% Waterproof - Using IPX7 waterproof material, our dog collar with Airtag holder provides full protection for your dog collar and your Airtag! Waterproof LED dog collar for safe swimming or playing in the rain. (Please close the battery cover after charging) 4.USB Fast Charging - Charge your AirTag Collar using the included USB cable. It only takes 2 hours to fully charge and can glow for 8-12 hours! FEEYAR illuminates the AirTag dog collar with three lighting modes: