This articulating stereo zoom microscope includes a 3.5x-45x trinocular head a 0.5x Barlow lens an articulating arm with clamp and a fluorescent ring light providing crystal-clear sharp images and versatile flexibility. With 30mm super widefield high-eyepoint 10x eyepieces the microscope offers 13:1 large zoom magnification power 8 inch (200mm) large working distance and 2.5 inch (65mm) super wide field of view. The ring light provides bright even and cool illumination. Brand: AmScope Model: SM-6Tx-FRL Color: White/ black Magnification: 3.5x-45x Objective diameter: 0.7-4.5x Eye relief: Accurate alignment ensuring a fatigue-free long time viewing Lens coating: Fully coated optical system Requires batteries: No Body material: Metal/ alloy Weight: 30 pounds Dimensions: 18 inches high x 18 inches wide x 21 inches deep