Eyepieces magnification 12.5x, pupil distance adjustable range 55mm~75mm, diopter adjustment range +6D ~ -6D. Binocular tube 90° binocular tube Magnification manual 3-step changer, ratio 0.6,1.0,1.6 , total magnification 3.75x, 6.25x,10x ( F 250mm), illumination LED cold light, strong light, longer lifetime, brightness adjustable infinitely, illumination diameter of light spot Φ70mm, illumination intensity≥ 60000lux, field of viewΦ53mm,Φ32mm,Φ20mm build-in small-spot, both blue and yellow light filter. Objectives F=250mm (180mm-300mm adjustable objectives for optional) Rotating head for all direction operate by two handles,free and easy to operate in 0-360° Maximum length of arm 1100mm
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