Specs: 1-4X Objective,WF10X EYEPIECES Technical Performance: 1.Sharp stereo erect image over a vide field view. 2.45? inclined and 360? rtational binocular head with locked-ineyepiece.The left ocular-tube with diopter adjustment ±5dp,The interpupillary distance is between 55-75mm 3.Zoom objective 1x-4x 4.ZTX-E series supplied with pillar style stand, ZTX-E-W series supplied with arm curved style stand.ZTX-3E series trinocular 5.Electric apparatus has CE approval 6.Power supply 110V/60Hz or 220V/50Hz 7.Each set packed in styorfoam and in an inner box.Two sets in one carton 8.A wide range of optional accessories. Optional accessories: 1.Eyepiece WH5x(Ф22mm),SWF10x(Ф23mm)WF15x(Ф13mm),WF20x(Ф10mm) 2.Auxiliary objective 0.5x,0.75x,1.5x,2x 3.Video Attachment for Microscope 4.Darkfield stage,Ф94.5mm 5.White/black workingplate,Ф94.5mm 6.bluorescent bulb 5W 7.Halogen bulb 12V/10W 8.Ring fluorescent lighting 8W & 10W 9.Wooden cabinet with lock and key