Clipboard， storage space， and a calculator in one. Features a strong， low profile clip with rubber grips that holds up to 1/2 In. paper securely. Larger internal storage holds pads， pens， and more. Bottom opening for convenient access. Durable polypropylene construction. Solar powered and battery operated calculator. AG10 button battery included. (Saunders does not provide replacement batteries). Holds letter size sheets. Dimensions: 10 In. W. x 16 In. L. x 2.6 In. D.