Celestron Labs CB2000C Compound Binocular Microscope10x20x Eyepieces4x10x40x100x Achromatic Objective Lenses. The Celestron Labs CB2000C Trinocular Compound Microscope offers all the advanced features you're looking for. With 10x and 20x eyepieces and 4 included objective lenses (4x 10x 40x and 100x) you'll achieve magnification ranging from 40x to 2000x. Improve the quality of your magnified images with the included 3 colored filters. The 10 included prepared slides guarantee exciting discoveries right out of the box. This all-metal microscope provides perfect illumination thanks its NA 1.25 Abbe condenser and iris diaphragm which allow to you to control and concentrate light on your specimens. You can easily control brightness contrast depth of field and evenness of illumination by adjusting the distance between the Abbe condenser and objective or by adjusting the condenser iris diaphragm which controls the diameter of the light beam. The fully mechanical stage has knobs to control both axes for easy centering of your slides. An all-metal construction means you can rely on the Celestron 2000x Microscope w/Abbe Condenser for years to come. Specifications for Celestron Labs CB2000C Compund Microscope: Eyepieces: (1) WF 10X (with pointer)/ (1) WF 20X Objectives: (4) achromatic 4x 10x 40x- on quad click rotating objective turret Magnification: 40x to 2000x Focuser: Coaxial coarse and fine focus knobs Head: Trinocular with 45-degree incline Illuminator: Lower halogen adjustable Condenser: Abbe NA 1.25 Diaphragm: Iris Stage: Mechanical stage 5.5 in x 5.5 in (140 mm x 140 mm) Power: AC plug (110-240V) Accessories: 10 prepared slides 3 color filters (blue yellow green) immersion oil Dimensions: 9.75 in x 7.3 in x 14.25 in (24.76 cm x 18.5 cm x 36.2 cm) Weight: 12lbs.-5oz. (5.53 kgs) Features of Celestron Compound Microscope: Professional-grade compound Trinocular microscope with 2000x power 10x and 20x eyepieces (10x with pointer) 4 fully achromatic objective lenses - 4x 10x 40x 100x View specimens at 40x 80x 100x 200x 400x 800x 1000x and 2000x magnification All-metal construction with fully mechanical stage and coaxial focus with coarse and fine focusing knobs Built-in adjustable halogen lower illumination with Abbe condenser and iris diaphragm Package Contents: Celestron Labs CB2000C Compound Trinocular Microscope Celestron 44132: Labs CB2000C Compound Binocular Microscope10x20x Eyepieces4x10x40x100x Achromatic Objective Lenses