The PetSafe Stay & Play Pet Fence Wireless Dog Fence Collar is a rechargeable receiver designed for dogs to stay within a designated area. As part of the PetSafe brand, this wireless collar allows for easy installation and operation, making it a convenient and reliable choice for pet owners looking to train and control their dog's behavior. With a focus on providing a safe and secure way to keep pets contained, this electronic fence collar is a popular choice for those seeking a solution for their dog's obedience and training needs.