The OPTi consists of a mouse camera with USB interface and the OPTi software which runs on a PC laptop/desktop. This unique software interface allows for effective management and control of the magnified image on the screen. The OPTi is ideal for someone who wants to be able to read while they are on the move. Its compactness makes it ideal to carry in a bag while travelling. The OPTi mouse camera makes even the binds of books accessible.