The compact and versatile Eidolon Handheld Slit Lamp Model 510L, a popular anterior chamber instrument, uses a patented optical system to produce a high-brightness, continuously adjustable sized slit image rivaling the best high-end tabletop models. The attached 20-D loupe provides 5x magnification and a large field-of-view. It weighs only a few ounces and operates for hours on two standard alkaline AA batteries. Nylon soft pouch included. Unconditional 5-year warranty.