I absolutely love this document camera. I use it daily because it is so easy to use and allows all my students to be able to see. I plug it in to my computer and download the app which was very easy to do then use my projector to project it onto my board. I love that I can move the arm around and the self adjust works great. My students loved seeing our caterpillars up close and it is great for math and writing as well! I highly recommend this for teachers.