Celestron 44104 500x Power Advanced Biological Microscope Intermediate-level 500x power biological microscope with five prepared slides included 4x, 10x, and 40x objective lenses with 10x and 12.5x eyepiecesview specimens at 40x, 50x, 100x, 125x, 400x, or 500x magnification Fully coated glass optics, all-metal body with monocular head Mechanical stage, Abbe condenser, iris diaphragm, and 110-volt LED illuminator Coarse and fine focusing knobs, adjustable arm (0 to 60) for comfortable viewing Fully-coated glass optics, all-metal body with monocular head Abbe condenser, iris diaphragm, and LED Illumination - 110volt AC for light control 10x and 12.5x eyepieces and 4x, 10x, and 40x objective lenses Adjustable arm from 0 to 60 degrees provides comfortable viewing Five prepared slides and mechanical stage