With a few controlled and easy blows into the Rocky Mountain Hunting Calls Stealth Dirty Dog Predator Call, you'll have those 'yotes giving up their positions in no time at all. With a little practice and experimentation, you'll be able to produce locater vocalizations, challenge yelps, lost mate sounds, and even invitation howls. In time, you'll be speaking their language and luring 'em in. Just blowing creates higher tones, while placing your fingers over the holes creates a deeper, less voluminous sound. This wide-reed, plastic-barrel coyote call from Rocky Mountain Hunting Calls features a tone cap and automatic lip positioner for more precise calling. It also includes the V.E.T.T. system, which helps create stable high notes, lifelike raspy barks, and more volume with less air. Manufacturer model #: 434. Mimics coyote calls to get them to call back Produces locater, challenge, lost mate, and invitation vocalizations V.E.T.T. system creates more volume with less air Straight blowing creates higher tones Covering holes create deeper sound Wide-reed, plastic-barrel predator call Tone cap and automatic lip positioner