Eyepieces magnification 12.5x, pupil distance adjustable range 55mm~75mm, dioptor adjustment range +6D ~ -6D. Binocular tube 0°~200°variable angle binocular tube, add new pupil distance adjustment Magnification 6:1 zoom, motorized continuous, magnification 1.8x~19x; field of view Φ12~Φ113mm Coaxial assistant's binocular tube Free-rotatable assistant stereoscope, all direction circumvolve freely, magnification 3x~16x; field of view Φ13~Φ94mm Illumination 2 sets xenon lamp , each lillumination intensity 100000lux Working Distance Motorized 200-500mm Stand system electromagnetic brakes Filiter Yellow filter, Green filter, small spot Maximum length of arm 1715mm New stand Height from objective to floor 690mm<H<1452mm Handle controller 10 functions (zoom, focusing, magnetic lock, take vedio/photo,browse pictures ,autofocus, brightness adjust) Weight 215kg Camera system Build-in camera system, can take vedio/photo, browse pictures Atutofocus function