D.T. Systems, Inc. has been providing the world's best, most advanced and affordable e-collars and dog training gear since 1983. With our corporate office and service center located in Dallas, Texas, D.T. Systems and its staff is always dedicated to quality, innovation and service This is a 2-dog training collar system , that we purchased for training. We ended up losing the dogs, before we could utilize the system. Prior to this we sent them back to the company for a complete reconditioning, so they have never been used since we had these reconditioned. We have the receipts on the reconditioning. EDT is one of the nations' leading collar systems. EDT series collars satisfy all your dog training needs. With up to a 1,200 yard range they are perfect for hunting, basic obedience and professional training. EDT series collars feature twenty levels of stimulation intensity, adjustable right from the handheld transmitter. Easy one hand operation allows for maximum control and safety. The EDT Series Dog Training Collar is durable, safe and, when used correctly, very humane. Waterproof transmitters. The automatic safety shut-off feature stops the stimulus from both the transmitter and the receiver to prevent accidental or prolonged stimulation . Asking $275. Call 706-374-2698