The phase contrast digital compound LED microscope provides phase contrast microscope system and brightfield microscope system for viewing live cells depending on your applications. This package also includes a sturdy aluminum carrying case to provide additional protection for the microscope and common accessories while transporting the microscope from location to location. The microscope features a built-in 3.0MP USB digital imaging system, a LED illumination with variable intensity, Abbe NA1.25 condenser with iris diaphragm and a complete set of phase contrast kit. It offers eight levels of brightfield magnification from 40X to 2500X. The phase contrast kit includes a phase contrast condenser, a centering telescopic eyepiece, four plan phase contrast objectives: PH10X, PH20X, PH40X (S), PH100X(S, Oil). It offers phase contrast magnification power: 100X-200X-250X-400X-500X-1000X-2500X. The USB digital imaging system captures still microscope images and live video on computer without the hassle of setting up the digital camera. The included software compatible with Windows can also be used to make measurements. You can also view and capture the images on iMac or Macbook with Mac OS. It's easy to replace the LED lamp by your own. This phase contrast compound microscopy is widely used clinical, biological research and schools, specially for observing live cells.