Educator Pro 1/2 Mile E-Collar Remote Dog Training Collar Vibration, Tapping Sensation Pavlovian Stimulation mile range trainer for dogs 5 pounds and larger Loaded with unique features, making it the most humane and effective trainer available LCD display with backlight allows for precise control 256 levels of smooth "blunt" stimulation with 100 Levels displayed on the LCD Seven stimulation modes to choose from