Ba50 Cordless Microscope. The BA50 is 3/4 size educational microscope with reversed nosepiece LED illumiation. Built-in batteries allow cordless operation. The rugged metal construction and precision mechanics should guarantee many years of use.Specification:• 3/4 size student microscope • Monocular head, inclined 45° and 360° rotating • Widefield eyepiece WF10X/18 mm • Reversed triple revolving nosepiece • Achromatic objectives 4X, 10X, 40X • Coarse and fine focusing system with tension adjustment • 0.65 N.A. condenser with disc diaphragm • LED illumination 20 mA, 3.5 V, 70 mW with intensity control • PSU included• Dust cover• year warranty