Thanks for your interest in Mazuk Technologies. In business since 1999 , our mission is to provide Aerobic Instructors the highest quality wireless microphone systems at an affordable price. We will be adding extra features over the next few months, so come back regularly. You can contact us at: Mazuk Technologies or by phone at 315-343-1919. We are located at: 535 West 5th Street Oswego, NY 13126 Our online store is designed to provide you with a safe and secure environment to browse our product catalog.