... first service with best LZJ-6E dental and ENT operating microscope with 1, the primary mirror, the optical tube ... diameter: Φ66mm, Φ41mm, Φ26mm, Φ16.5mm, Φ10.4mm4, eyepiece 12.5 X / 18B5, large objective lens focal length: 250mm ... 110V/60Hz...Optional splitter, single head teaching microscope, binocular assistant microscope, internal or external camera and interface, and digital radiography systems ...