This Welch Allyn #11620 3.5v Ophthalmoscope is a high-quality device that is perfect for conducting eye exams. It features clear and perfect optics that provide accurate and reliable results. The ophthalmoscope is made by Welch Allyn, a trusted brand that is known for producing top-quality medical equipment. This direct ophthalmoscope is designed for use in healthcare, lab, and dental settings. It is a unit type device that is sold as a single unit. The ophthalmoscope is made in the United States and is intended for use in eye exams.