The EXM-50 is a reliable and sturdy microscope, perfect for educational environments. Its compact design, built-in LED illumination, and carry handle make it easy to set up, use, and store. Student-friendly and designed to foster scientific curiosity, the EXM-50 is an excellent tool for encouraging exploration and learning. Specifications: Viewing Head: Monocular, inclined 45°, rotatable 360° Optical System: DIN Optical System, f = 160mm Objectives: DIN Achromat 4x, 10x, 40x* objectives (* spring loaded) Eyepiece: WF10x eyepiece, 16mm field of view, with pointer Nosepiece: Front-facing, 3-position nosepiece with positive click stops to ensure objective alignment Focusing System: Coaxial coarse and fine focus, focus tension adjustment; focus travel stop Stage: 119mm x 119mm stage with Easy Load stage clips Condenser: N.A. 0.65 condenser with a six aperture disc Illumination: Variable LED illuminator; install AA batteries (requires 3; included) for cordless operation Stand: Cast aluminum alloy with built-in carry handle Power: Input: 100-240VAC, 0.4A; Output: 5V/1000mA Instruction manual, dust cover Warranty: 5-year limited warranty for parts, labor and electronic components; 1-year warranty on LED bulb