This ianciu 2 Pack Bark Collar is the perfect solution for dog owners looking for a reliable and efficient way to control their pet's barking. The collar is suitable for dogs of different sizes, including large, medium, and small breeds. It features a static/shock control method that is designed to deter unwanted barking, without the need for harsh methods. The collar is waterproof and comes with adjustable shock levels, allowing you to customize the collar's response to your pet's barking. With its rechargeable battery, you can use the collar for extended periods without worrying about running out of power. The black color gives it a sleek and stylish look, and it weighs only 0.73 pounds, making it easy to attach to your dog.