This ATOMIC-13 series call is an open reed cow/calf call. Built under the Steve Chappell signature series line with a wide reed, wide sound board and lip positioning ring. The Heart Breaker can produce all cow/ calf mews and nasally estrus sounds as well as the estrus scream. The ATOMIC-13 machined, high quality aluminum barrel produces clear high tones and amplifies the sounds to cut through wind and deep canyons.