Specs: 2X,4X Objective,WF10X EYEPIECES Technical Performance: 1.Sharp stereo erect image over a wide field view. 2.45?inclined and 360?rotational binocular head with locked-in eyepiece. The left ocular-tube with diopter adjustment ±5dp, The interpupillary distance is between 55-75mm. 3.Three kinds of 90? rotational objetive seletion 4.XTX-5(A,B,C)series supplied with pillar style stand; XTX-5(A,B,C)-W series supplied with arm curved style stand. 5.Electric apparatus has CE approval 6.Power supply 110V/60Hz or 220V/50Hz 7.Each set packed in styrofoam and in an inner box. Four sets in one carton. 8.A wide range of optional accesories. Optional accessories: 1.Eyepiece WF5X, WF10X, WF15X, WF20X 2.Objective 1X, 2X,3X,4X, 3.Darkfield stage,Ф94.5mm 4.Jewel tweezer 5.White/black objcet plate,Ф59.9mm 6.White/black objcet plate,Ф94.9mm 7.Frosted glass object plate,Ф94.9mm 8.Incandescent bulb 12V/10W 9.Halogen bulb 12V/10W 10.Ring fluorescent lighting 8W,10W 11.Wooden cabinet with lock and key