The Carlton's Calls Estrus Squeeze Me Elk Cow Call by Hunter's Specialties is absolutely the best sounding, easiest to use elk call on the market. Begins to whine from the moment you depress the bulb, all the way to the nasally sound at the bottom. Dial in the pitch that you want by adjusting the tone slots. From the high pitched long distance fight'n cows to the up-close estrus whines and calf calls. Patented