Dogtra Super X 1 Dog Training Collar Precise stimulation level (0-27), 1 mile range. 'Nick", "Constant" and non-stimulating pager/vibration. 2-hour rapid change lithium Polymer batteries. Fully waterproof collar/receiver and transmitter. LCD screen displays exact level of stimulation even in dark or low light conditions, Three bar battery life indicator. Model number: 3500NCP. Made in South Korea.