Features: 1목This product is suitable for all audiometer types of air conductivity detection and testing. 2목Stable listening frequency is stable, high sensitivity the test result is accurate. 3목Ergono more→mic designs, comfortable to wear, easy and convenient to use. 4목Suitable for provincial CDC (Centers for Disease Control), municipal physical examination centers, otolaryngology departments in major and small hospitals, training schools for deaf children, driving schools, hearing clinics, hearing aid stores, etc. 5목Designed to provide high?sensitivit
