The VE-B4 is a professional microscope, ideal for research, higher education and routine work in clinical laboratories Its semi-plan objectives offer correction of optical aberrations for the observation of higher quality images. The Kohler LED lighting makes it a very complete and versatile device. The VE-B4 is adaptable to the needs of the user, it can be configured optionally to be compatible with a phase contrast kit and polarization set. Product Specifications: EYEPIECES: WF 10X/20mm with rubber eyecups diopter adjustment on one eyepiece HEAD: Binocular Siedentopf type, 45° inclined and 360° rotation, with interpupillary distance adjustment between 48 - 75mm / 1.88” - 2.95”. NOSEPIECE: Quadruple nosepiece with anti-slip grip and click-stops. OBJECTIVES: 4X, 10X, 40X (S) and 100X (S) (oil), semi-plan achromatic optics, metallic finish and color ring for easy identification. STAND: Stative, robust and reinforced with epoxy paint finish. STAGE: Two-Layer stage with X-Y coaxial movement, 5.90” x 5.19”, vernier, millimeter scale, clamp and height adjustment with stop. CONDENSER: Abbe, N.A. 1.25 with height adjustment screw. Equipped with adapter for phase contrast kit and polarization set (not included). DIAPHRAGM: Iris with filter holder. FOCUSING: Coarse and fine anti-slip control knob with tension adjustment. ILLUMINATION: Kohler LED with variable intensity control and field diaphragm in the lamp. WEIGHT: 24.11 lb / 10.93 kg. DIMENSIONS: 12.01” x 14.96” x 20.08” / 305 x 379 x 510 mm POWER SUPPLY: Three 1.2V AA rechargeable batteries (included) for 4 hours of continuous operation. 110-240V, 50/60 Hz AC adapter. Accessories included: Blue, green and yellow filters. Dust cover. Immersion oil. Operation manual. Power cord. Accessories NOT included: Phase contrast kit. Polarization set.