This MicroSight 10-200x basic microscope set will focus anywhere from 10x at the low end to 200x at the high end. What a remarkable product at an excellent price. The software for MAC and Windows is included and is compatible with all Chromebook computers as a plug and play external camera or with available free software available through the Google store. This amazing set has a 5 year warranty! Take photos, movies in real time or elapsed time, and draw, label, or measure on any captured image, all with the intuitive software included. We always include our specially manufactured focal tips which allow you to know exactly when you are viewing at 15x, 30x, 50x, and 150x. Not only do these tips give students the flexibility of knowing what magnification is being viewed, they allow students to be steady while viewing specimens. Instantly, students are engaged, excited and wanting to explore everything around them.