The Ophthalmoscope makes use of XHL Xenon Halogen Technology to produce concentrated bright light for proper illumination and accurate color rendering. The wide range of lenses, from -20D to +20D as well as the 5 different apertures, namely: small spot, large spot, semicircle, red-free filter and fixed, can be selected to best see the inside of the eye. An integrated On/Off switch can be found on the pocket clip to make it possible to automatically switch the lights off once the otoscope is placed inside the pocket. It runs on 2 rechargeable AA batteries that are charged when the otoscope is placed on the included desktop charger stand. Download: Instruction book
