The Original Boreal Microscope — Great Value, Proven Quality. Features for a Clear, Crisp Image: • Retractable 40X Objectives • DIN*, Coated Glass, Achromatic Optics • Parfocal and Parcentered Objectives. Features for Ease of Use: • Ultra Smooth Rack and Pinion Focus • All Metal, Full Size, 37cm High Body. LED Illumination • Brightest, Whitest Illumination Available • Cool to the Touch — Safer for Students, Better for Viewing Specimens • Long-Lasting Bulb — 10,000 Hours Without Replacement