This is the 955 Colposcope, from Seiler. The 955 Series Colposcope offers the following benefits and features: Smooth, 5-Step Turret Magnification Changer 300mm Working Distance Objective Lens (200-400mm Available) Widefield 12.5x Eyepieces with Diopter Locks Straight Binocular Head (Optional: Fixed Inclined or Inclinable) LED Illumination System Maximum height from floor to objective lens – 54? (Minimum – 32?) Green Filter Spare Lamp, Dust Cover and Instruction Manual Included