By utilizing an ergonomic design to improve the operator's posture while working, the SMZ800 Stereo Microscope reduces fatigue caused by long hours of observation. Its superb optical performance features an exceptional parallel optical system with a 6.3:1 zoom ratio with clickstops at intervals from 1x through 6x. The SMZ800 also microscope features an array of useful accessories, allowing the system to grow as your requirements change.