The compound trinocular microscope 40X-2000X provides a LED illumination system and an USB digital imaging system. The digital biological microscope features an optical system for simultaneously observing images through eyepieces and an adjustable trinocular port. The LED lamp can be replaced by yourself. The USB digital imaging system that captures still microscope images and live video on computer. The included software compatible with Windows XP/Vista/7/8/10 can also be used to make measurements. You can also view and capture the images on iMac or Macbook with Mac OS. The high resolution image in the field of view is crystal clear and will satisfy the demands of professionals. All lenses are made of high quality optical glass. This trinocular microscopy is good for teaching, demonstration, clinical examination and research purpose.