Dogtra Training Collar: * Powerful, entry level training unit * 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) * 1/2-mile range * Stimulation type: nick, constant and non-stimulating pager/vibration * Rechargeable, user-replaceable Ni-MH batteries * Fully waterproof collar/receiver and transmitter * Easily visible blue LCD screen displays exact level of stimulation * Screen can be seen in the dark or low light conditions * 3 bar battery life indicator * LED colored indicator to show remaining battery life * Model# 1902NCP