MimioTeach interactive system can turn any dry-erase board into an interactive whiteboard. The portable, durable bar, powered by infrared and ultrasonic technology, attaches easily to a whiteboard. With MimioTeach now you can move to different classrooms while carrying your interactive teaching equipment with you to deliver engaging interactive lessons. Plug the wireless receiver into your computer, connect your computer to a projector, and it will activate a projected display area up to 4 feet by 8 feet. The MimioTeach stylus lets you  control the information on your computer from your whiteboard, without any wires. When not in use just put the stylus on the MimioTeach bar and it will be automiatically recharged.