Educator K9 Handler Remote Dog Training Collar One dog system with 3/4 mile range Small receiver (2"x1.5"x1", 2.4 oz) on a 33-inch bungee collar for dogs 5 pounds and larger Ergonomic "stopwatch" design transmitter allows you to watch your dog at all times Delivers a tapping sensation similar to vibration, but more intense, making it an effective addition to the stimulation User-selectable stimulation levels from 1 to 100 with additional boost stimulus selectable from 1 to 60 Includes two sets of contact points (5/8" and 3/4" thick hair) Lithium-polymer rechargeable batteries with dual charger; 2-hour full charge