The Welch Allyn 3.5V Halogen HPX Ophthalmoscope Head 11720 is a specialized medical instrument designed for use by ophthalmologists, emergency medicine professionals, and family medicine practitioners. Made by the trusted brand Welch Allyn, this ophthalmoscope head is a high-quality unit intended for diagnostic and examination purposes. With its 3.5V standard power source and halogen bulb, this product provides clear and precise illumination for detailed eye examinations. Proudly made in the United States, this ophthalmoscope head is a reliable and essential tool for healthcare professionals in various disciplines.