The SD-3225 is specifically designed to control up to six tracking-and-trailing hounds. Its spectacular two-mile range lets you command your pack with continuous or momentary stimulation, tones or vibrations. Direct the hunt with eight correction levels and 21 stimulation levels (seven each at low, medium or high). DryTek™ waterproof design technology protects the durable transmitter and slim-profile receiver. The compact transmitter features color-coded indicators that correspond with collar colors. Recharges in two hours. Includes: 4.9-oz. remote transmitter; 4.3-oz. collar receiver; charging cradle; adapter; test light; belt clip; lanyard; long contact points; operating guide; basic training DVD; and manual.