The 1900NCP is a low to high power unit, for medium to large breeds. It has a ½-mile range, rechargeable batteries, and fully waterproof receiver and transmitter. The transmitter on the 1900NCP is equipped with stimulation modes in Nick and Continuous, a non-stimulating Pager vibration mode, and an LCD screen on the transmitter to display the exact level of stimulation and the battery life, even in dark or low light conditions.