The Sport Dog Hunter 1200M Remote Trainer features a compact, waterproof Remote Transmitter that offers up to 16 stimulation levels with continuous or momentary static stimulation. In addition, you have the option to send tone or vibration signals. With proper training, a dog will learn to associate the stimulation with a command. The lightweight, waterproof Collar Receiver features a slim profile and contoured shape that ensures a comfortable, custom fit on your dog's neck. With a range up to 1200m, the system is expandable for up to 3 dogs. The batteries recharge in only 2 hours.