... rotationEye piece 12.5×Total Magnification and Diameter of Visual Field(mm) 6×(33mm),10×(22.5mm),16 ... ×(14mm),25×(8.8mm),40×(5.5mm)Adjustable Range of ... degree ,20 degree .Light Spot Diameter(mm) φ14,φ10,,φ5,φ3, 2, φ1,φ0.2Filter : Filter Heat absorption ... or special LED 10W) Voltage/Frequency: AC220V±10%/60Hz±1Hz. AC110V±10%/50Hz±1HzPower 68VAGross weight: 18KGNet weight : ...