The Wafer is only 0.8cm (3/8") thick. The tracing area measures 44cm x 32cm (12.5" x 17"). The Wafer has dimmable LEDS and provides an even spread of light from edge to edge. It is powered by an AC Adapter and is very low heat. Wafer is ideal for calligraphy, stenciling, scrap-booking, embossing, quilting, embroidery, sewing, and much more.