Puppy Barking Collar Auto Recognition Dog Collar For Large Dogs Feature:1. Automatic recognition: helps to stop dog barking, the strength of the anti shoulder collar will automatically increase with the barking time.2. Adjustable: Adjustable nylon straps allow your dog to carry it without stress, greatly improving your dog's comfort and allowing your dog to move freely.3. Reflective Strips: Nylon strips with reflective strips can increase your dog's visibility, find your dog in twilight, foggy, dark environment.4. Bark Activation: The dog collar only activates when the dog barks to speed up the response and ensure that the dog receives timely and correct training.5. Waterproof: Outdoor waterproof dog collar, you don't have to worry about rainy days, very safe, suitable for small, medium and large dogs. Specification:Item Type: Dog CollarMaterial: Plastic, NylonReceiver Battery Parameters: 602030mAh 300mAh Li-ion Battery (Built-in)Applicable Dog Breeds: Large Dogs, Medium Dogs, Small DogsCollar: AdjustableWeight: Approx. 110g/3.9ozPackage List:1 x Receiver1 x Dog Collar1 x Accessory Package(Including 7pcs)