Type: Galilean magnification, 13 degree binocular tube with converging optics Magnification Style: Revolving Drum Magnification Ratio: 10X, 16X, 25X Stereo Angle: 13 Degree Eyepiece: 12.5X PD Adjustment: 55mm~78.5mm Diopter Adjustment: -6D~+6D Illumination: Slit Width: Continuous from 0mm to 14mm (at 14mm,slit becomes a circle) Slit Height: Continuous from 1mm to 14mm (at 14mm,slit becomes a circle) Slit Angle: 0 to 180 degree with horizontal scanning capability Aperture Diameters: 14mm, 8mm, 5mm, 3mm, 0.5mm Filter: Heat-absorbing, UV, Cobalt Blue, Red-Free Slit Inclination: 5 Degree, 10 Degree, 15 Degree, 20 Degree Illumination bulb: 12V, 30W halogen bulb Base: Longitudinal Movement: 90mm Lateral Movement: 100mm Fine Base Movement: 15mm Vertical Movement: 30mm Chinrest: Vertical Movement: 80mm Fixation bulb: Green Led Power: Power Supply: 100-120V, 220-240V AC Frequency: 50/60Hz Power Consumption: 40VA