The SportDOG Dog Remote Transmitter Control SDT00-13861 & SDT00-13857 Collar+Charger is a remote trainer designed for obedience training of dogs. Made by the brand SportDOG in the United States, it features the model Sit Means Sit, which allows pet owners to remotely train their dogs to sit and stay. The transmitter and collar system together provide a convenient and effective way to reinforce good behavior in dogs, making it a valuable tool for dog owners looking to improve their pets' obedience and overall training.