Happiness is a well-behaved dog. The Educator K9-402 B33 K9 Handler 3/4-mile range 2-dog training collar with remote system with a 33" bungee collar is loaded with features making it the most humane and effective trainer available with the smallest rechargeable dog training collar receiver in the world. The small receiver size, 2" x 1.5" x 1" 2.4 ounces, provides plenty of stimulation for most dogs. The unique COS (control of stimulation) technology provides clean, effective stimulation without the head jerking found with other training collars. The receiver emits a tapping sensation similar to intense vibration and the Pavlovian tone adds to the stimulation. The user-selectable levels range from 1 to 100 with "lock and set" technology to prevent overstimulation. The bungee collar provides unmatched comfort and contact reliability while the stop watch style transmitter is ergonomic and wrapped in black skins for discreetness. A night tracking light is controlled by the transmitter allowing the user to flash or continuously light up the collar receiver for locating your dog after dark. A beeper can be turned on to help locate a lost transmitter. System includes waterproof floating transmitter remote with lanyard and belt clip, two waterproof receivers, two 33" bungee collars, rechargeable lithium polymer batteries charge in just 2 hours, battery charger, test light, four contact points (2X 5/8" and 2X 3/4"), contact point installation tool, and hard carrying case. The K9-402 E-Collar will turn a smart stubborn dog into a genius. We strive to make you successful with your training collar and your complete satisfaction is our only concern. We offer a two-year warranty against defects (one-year on accessories). Please refer to included owner’s manual for training tips or call toll-free for expert help with set-up, training, troubleshooting and registering your Educator product. Live US phone support is available Monday through Friday between 8 am and 5 pm Eastern. Proudly assembled in the USA.