The Anti Barking Devices by coprisin are rechargeable auto dog bark control devices that offer 3 different modes to help control your dog's barking. These devices are designed for adult dogs and come in a sleek black color. With a compact size of 5.16 x 3.66 x 2.24 inches and a weight of 6.4 ounces, these devices are easy to use and convenient for on-the-go training. The sonic trainers effectively train dogs to stop barking, making them a must-have for pet owners looking to improve their dog's behavior.