Introducing a new look to the Swift Stereo Line! The SM102 features fixed magnifications of 20X and 40X. The SM102 includes energy-efficient variable LED illumination with 5 light setting combinations, "one-touch" spring loaded stage clips and right eyepiece diopter focusing adjustment. Ideal for high school classrooms and up. This new series of stereo microscopes is designed to fit your budget, too! MAGNIFICATION 20X and 40X OPTICAL SYSTEM Paired widefield eyepieces are 45° inclined, with diopter adjustment. Interpupillary adjustment from 55mm to 75mm. Interlocked eyepiece tubes with diopter for increased focus acuity. Viewing head rotates 360°, locks in place by tightening thumb screw. Paired objectives are parfocalled, parcentered, and achromatic. Magnification changed by rotating magnification dial. ILLUMINATION Energy-efficient LEDs provide bright, white with virtually no heat. Variable turret (6 LED) and top illumination. Two illumination switches allow for 5 light settings, turret, top, bottom, simultaneous turret and bottom or simultaneous top and bottom. FOCUSING Rack and pinion focusing with slip clutch and tension adjustment. "Slip-clutch" system protects against over-focusing.