Specs: 2X Obiective,WF10X EYEPIECES Technical Performance: 1.Sharp stereo erect image over a wide field view. 2.Upright binocular head with locked-in eyepice. The left ocular-tube with diopter adjustment ?dp. The interpupillary distance is between 55-75mm. 3.XTX-1 series Dovetail inserted style objective with fixed style objective. 4.XTX-1(A,B,C) & XTX-4(A,B,C) series supplied with pillar 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. wide range of optional accessories Optional accesssories: 1.Eyepiece WF5X, WF10X, WF15X, WF20X 2.Objective 1X, 2X, 3X,4X,6X 3.Darkfield stage,Ф94.5mm 4.Jewel tweezer 5.White/black objcet plate,Ф59.9mm 6.White/black objcet plate,Ф94.9mm