NSW-20 Magnification: 10x and 20x Features: -Microscope.-Stereo body.-Rubber eye guards.-Dust cover.-Dual magnification 10x-20x, 10x-30x, 20x-40x and 6x-20x.-Field of view: 0.91" (23 mm) at 10x, 0.45" (11.5 mm) at 20x.-Field of view: 0.91" (23 mm) at 10x, 0.30" (7.6 mm) at 30x.-Field of view: 0.45" (11.5 mm) at 20x, 0.22" (5.7 mm) at 40x.-Field of view: 1.82" (42 mm) at 6x, 0.45" (11.5 mm) at 20x. Specifications: -10x Wide field eyepieces (F.N. 23). Dimensions: -Weight: 2 lbs.