SMZ-168-BL Greenough zoom optical system Binocular head, 35º inclined, 360º rotating Widefield eyepieces WF10X/23mm 6.7:1 Zoom ratio, WD=113mm Objective magnification range: 0.75X-5X Pole type stand with large working area and head holder Coarse focusing system with tension adjustment 12V/10W incident and transmitted halogen illumination with intensity control Main supply 100V-240V (CE) Black/White and frosted glass stage plates, blue filter and dust cover.