The M250 is a low-cost series providing excellent value. At 80% the size of a large bench top microscope, it is compact and packed with features. Available with Monocular, Binocular or Dual Viewing heads, we have an option to meet your needs. High Intensity LED that works with a plug-in wall outlet (Halogen illuminated models are no longer available). Features: LED Illuminated, All Heads rotate 360, Paired 10X Widefield Eyepieces, 128x128mm built-in mechanical stage, Reverse position nosepiece, Iris Diaphragm, Achromat or Plan Objectives, 4X, 10X, 40X and 100X Oil, Graduated Coarse/Fine Focus, Will Accept B6-8182 Eyepiece Camera, Includes dust cover, blue filter manual, 5-Year Limited Warranty.