This unit is specifically designed for the Upland Bird hunter. The beeper is directed safely away from your dog's ears unlike many of the beepers on the market. There is two modes of beeper operation Point Mode that stays silent when your dog is running and makes a tone (single beep or hawk scream). Range point mode tones every 5 seconds and speeds to 1 second intervals on point. Beeper can be tuned and off from up a mile away. Collar has 6 levels of continuous and 18 levels of momentary. May be expanded to 3 dogs. One collar is included.