Absolutely the best sounding, easiest-to-use elk call on the market. Don&';t be fooled by cheap imitations. The patented Estrus Squeeze Me begins its whine from the moment you depress the bulb all the way down to the nasally sound at the bottom. And its tune able simply dial in the pitch you want by adjusting the tone slots. From high-pitched, long-distance fightn cows to up-close estrus whines and calf calls.