Objective Magnification: 1X Eyepiece Magnifications:10X、16X Diopter Compensation: ±7D Pupil DistanceWorking Distance: 48mm~70mm Working Distance: 80mm Slit width: 0~10mm continuously adjustable Diameter of Light Spot: 1mm,3mm,5mm, 10mm Slit Angle: Horizontal +30° Li Battery: 7.2V 750Ah, rechargeable Working Time: 5-6hrs Packing Size: 40*20*23cm Net Weight: 750g Gross Weight: 2600g