Leica S4E 4.8:1 zoom Ergonomic 38° viewing angle 6.3x - 30x magnification, working distance 110 mm, field of view diameter 36.5 mm* The only instrument in its class with 2 ergonomic objectives for variable viewing height, magnification and working distance 6 achromatic supplemental objectives Eyepieces for eyeglass wearers ESD safe construction (antistatic)