The OTC (Over The Counter) diaphragm call was designed with public land diehard hunters in mind. If you are chasing the highly pressured bulls on an OTC tag, look no further for a versatile, realistic mouth call. This call is capable of producing soft cow calls to great two-tone locating bugles. We use medium latex with a soft stretch, making anyone capable of producing realistic elk calls. Furthermore, this call is adaptable to your calling ability. If you are new to using a mouth call, the combination of latex and stretch, you find it easier to use than some of our other mouth calls. If you are an expert, the sound range you can make with this reed is impressive.