The 100mm (4") diameter magnifier is ideal for general reading, viewing ancient coins, and scanning large fields of view. It comes with a felt-padded lens case. All Zeiss hand-held magnifiers feature an aspheric lens shape which eliminates the focusing errors produced by ordinary spherical lenses; this allows you enjoy the sharpest possible images. Each lens is sized to give you the largest possible view for the chosen refractive power. Zeiss#: Z00045. Size: 1.5x. Color: black. Sold Individually. Case Qty: 1 .