HEINE BETA 200S LED Ophthalmoscope - HEAD ONLYExclusive dustproof design protects the precision optical components and ensures maintenance free operation. The BETA200 200 S Ophthalmoscopes are the only instruments with an aluminium frame system. Optical components are flush mounted on a cast aluminum frame, eliminating misalignment and making the instrument shock resistant. The BETA200 S LED has virtually unlimited hours of working life (up to 100,000 hours). No need to ever replace bulbs.