Celestron 44108 1500x Power Professional Biological Microscope A large, heavy duty professional level microscope that provides powers up to 1500x 10x &amp; 15x wide field (18mm &amp; 13mm fields of view) eyepieces and 4x, 10x, 40x, &amp Binocular head rotates 360 which allows comfortable two eye viewing at any position 45 inclined viewing angle provides comfortable viewing Built-in halogen illumination provides direct control of light with brightness adjustment