Dogtra Advance 2 Dog Training Collar: * Multipurpose e-collar for mild-mannered or stubborn dogs * Low to high power * Rheostat dial allows for gradual increases in stimulation intensity * No jumps between levels (0-127) * 3/4-mile range * Stimulation type: nick, constant and nonstimulating pager/vibration * Uses a lithium polymer battery * Provides a two-hour rapid charge * Fully waterproof collar/receiver and transmitter * One charger system: charge the transmitter and receiver at the same time * Over 8,000 different identity codes * Prevents signal mixup with other e-collars * Easily visible, blue LCD screen * Displays exact level of stimulation * Screen can be seen in the dark or in low light conditions * Three-bar battery life indicator * LED colored indicator shows remaining battery life * Includes two dog collars * Model 2302NCP