This is a professional binocular microscope that offers brightfield and phase contrast features. It comes with a sliding binocular head rack and pinion adjustment abbe condenser with iris diaphragm double layer mechanical stage and a complete phase contrast kit. This microscope is designed for teaching demonstration clinical examination and research purpose. It offers eight levels of magnification: 40X 64X 100X 160X 400X 640X 1000X and 1600X. The phase contrast kit includes a phase contrast condenser CT lens and a set of phase contrast 10X 40X and 100X PLAN objectives offering six levels of phase contrast magnifications: 100X 160X 400X 640X 1000X and 1600X. 45 degree inclined 360 degree swiveling binocular head Two (2) pairs of eyepieces: WF10X and P16X Large size 3-D double layer mechanical stage with stain resistant finish NA1.25 Abbe Condenser with iris diaphragm filters Rack and pinion adjustment condenser Product GS and CE approved Spare Bulb Fuse and Immersion Oil Included Phase Contrast Plan Objectives: Plan PH10x(0.25) PH40x(0.65) and PH100x(1.25 oil) Transmitted (lower) Illuminator: 6V/20W Halogen Stage: mechanical double layer size: 5-1/2 x 5-1/2 (140mm x 140mm) Condenser diaphragm: NA1.25 Abbe condenser with iris diaphragm Power supply: 110V/220V built-in auto-switching power adapter Brand: AmScope Model: B390A-PCS Color: White/Black Magnification: 40X-1600X Objective diameter: DIN 4X 10X 40X(S) 100X(S Oil) Eye relief: Accurate alignment ensuring a fatigue-free long time viewing Lens coating: Fully coated optical system Requires batteries: No Body material: Metal/ alloy Weight: 13.45 Pounds Dimensions: 11 inches high x 13 inches wide x 23 inches deep