New Model Trinocular LED Fluorescent Biological Microscope suitable for educational and laboratory applications. The dye-cast base frame offers high stability and an ergonomical design, with transmitted light and fluorescence reflective lighting system. New generation LED cold light source available in a choice of either Blue Excitation (465-475nm) or Green (Excitation 525-530nm) no need to warm-up before use, 50,000 hours life expectancy from LED Illumination. Extra Widefield Eyepieces EX10x/20 with Diopter Adjustment 4x, 10x, 400x & 100x Infinity Plan Objective Lenses Large Dual Layer Mechanical Stage Sliding-in Centerable Condenser Course & Fine Focusing LED-LUX Illumination with manual brightness control. Epi-fluorescence LED (Choice of 2 excitation ranges) A). Blue Excitation 3W LED (465-475nm) B). Green Excitation (525-530nm)