Dogtra STB Beeper Collar Beeper Version Hunting Dog Collar | Audible Up to 400 MetersThe Dogtra STB BEEPER COLLAR uses microcomputer technology to create distinctly different beeper sounds. It is also equipped with the Piezoelectric sensor for the most accurate motion detection of the Beeper Modes for Point Only and Run Point. The beeper sound is audible for 400 meters, which lets you train at a distance and still easily locate where your dog is. This collar is a great choice for hunters looking to train their dogs in the field. The