XCEL 200 Slit Lamp Key Features: Compact design, Wide-Field optics, Halogen lamp 10X, 16X, 25X magnification Feather-touch XYZ joystick Microscope Galilean Galilean Magnificate 3 step rotation 3 step rotation/5 step Eyepiece 12.5X 12.5X Magnification Ratio 10X, 16X, 25X , 16X, PD Range 54–75 mm 48.5–80 mm Dioptric Adjustment ±5 ±6 Slit Width 0–13.5 mm 0–12 mm Slit Length 0–13.5 mm 0–12 mm Slit Apertures 0.6, 5.8, 9, 13.5 mm 0.3, 1, 3, 5, 9, 12 mm Slit Rotation 0–180° 0–180° Filters Red free, cobalt blue, Red free, cobalt blue, heat heat absorbing absorbing, neutral density Movement Ranges: Longitudinal (in/out) 90 mm 90 mm Lateral (left/right) 107 mm 100 mm Vertical (up/down) 30 mm 30 mm Chin Rest Range 80 mm 80 mm Illumination 6V 20W halogen 6V 20W halogen Voltage 90–250 VAC 110/220 VAC.