SportDOG SportTrainer 1275 - Consistent, correct use of this product allows you to reinforce commands and correct misbehavior from up to 1200 meters. The Remote Transmitter sends a signal, activating the Collar Receiver to deliver a harmless stimulation. With proper training, a dog will learn to associate this signal with a command. Like all SportDOG products, this model features adjustable static stimulation levels so you can tailor the stimulation level to your dog's temperament, eliminating the risk of over-stimulation. Allows you to reinforce commands and correct misbehaviorRemote Transmitter sends a signal, activating the Collar ReceiverFeatures adjustable static stimulation levels You can tailor the stimulation level to your dogs temperament