Dogtra Super X 1 Dog Training Collar 3500 NCP Gently correct your dog with the low to medium output 400 yard range 2 hour rapid charge batteries A fully waterproof, reduced size receiver Made to fit dogs of variety of sizes 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 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