Microscope Eyepiece Type Monocular Light Source Quartz Halogen Optical Field of View 18 mm Optical Magnification 40X to 1000X Maximum Magnification Capability 1000X Base Dimensions 5 1/2 in x 5 in Manufacturers Warranty Length 1 yr Working Distance 12 mm Eyepiece Protractor Yes Includes (2) Eyecups Blue/Yellow/Green Filter Dispersion Filter Dust Cover Operation Manual Spare Fuses Spare Lamp