ViSee Portable Video Magnifiers are a family of video magnifiers to help people with low vision problems see better. There are several size of screens, 7", 5", 4.3", 3.5". The most popular one to our customers is 5" size due to its convenience to carry around and large enough screen to read. Our newest one is the 7" one as requested by some customers. With its large screen size and high resolution images, LVM-700 is a good product to use on desk.