1. Sharp stereo erect image over a wide field of view. 2. 45 degree inclined and 360 degree rotational binocular head with locked-in eyepiece. 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 head. 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. Three sets in one carton 8. A wide range of optional accessories. Optional accessories: 1. Eyepiece WH5x(dia.22mm), WF10x(dia.23mm)WF15x(dia.13mm), WF20x(dia.10mm) 2. Auxiliary objective 0.5x, 0.75x, 1.5x, 2x 3. Figure eyepiece: VD-TV, VD-PC 4. Darkfield stage, dia.95mm 5. White/black working plate, dia.95mm 6. Fluorescent bulb 5W 7. Halogen bulb 12V/10W/LED 8. Ring fluorescent lighting 8W & 10W 9. Wooden cabinet with lock and key /Aluminium case