LED CollarFeatures three light modes: slow flash, rapid flash, and steady light, enhancing your dog's visibility and safety at night With Protective Cover for AirTagSpecially crafted to not interfere with tracker signals while protecting your tracker from scratches and stains Long-lasting BatteryBuilt-in 250mAh battery with Type-C charging port, 1-hour charge provides 6-8 hours of use Waterproof ConstructionUltrasonic-sealed battery compartment with a transparent waterproof cover ensures protection against water immersion Durable BuckleHigh-quality buckle prevents breakage even when dogs pull strongly Adjustable FitFeatures a buckle for size adjustment, suitable for various dog breeds and sizes Specifications: Material: Nylon + TPU protective case + ABS transparent cover Sizes: S: Length 30-39CM, Width 2.5CM, Weight 85G M: Length 33-45CM, Width 2.5CM, Weight 90G L: Length 39-55CM, Width 2.5CM, Weight 95G Battery Capacity: 250mAh Functions: Positioning + Illumination Battery Life: 6-8 hours Light Modes: Steady light / Fast flash / Slow flash Certification: CE certified Note: For AirTag tracker is not included. Package included: 1 x Pet Collar with Protective Cover for AirTag 1 x Charging Cable Other things not included