The next generation of compact training and beeper collars, designed for the serious upland hunter. Dogtra's new 2500 T&B's beeper horn is built into the receiver and eliminates the bulky horn that sits on top of your dog's head like other beeper units: Features. Three beeper modes - run/point, point, and locate with an audible 400 yards range. Rechargeable 2-hour rapid charge Lithium Polymer battery. Fully waterproof, 1-mile range. Low to high power transmitter. Rheostat Intensity Dial that allows for gradual adjustment in stimulation intensity. Stimulation type Nick and Constant. LCD screen displays exact numeric level of stimulation clearly and accurately. Tri-color LED Battery Life Indicator. Also available in a two-dog system: 2502T&B.