Storage clipboard with a built-in calculator is a necessity for anyone that needs a professional-looking mobile office. It helps you stay organized and is weather-resistant. Solar-powered and battery-operated calculator is perfect for making quick calculations. Strong, low-profile clip features rubber grips to secure your documents. The metal clip safely holds 1/2" of important documents and notepads. The molded edges fit snugly together and keep your materials protected and secure. Open the break-resistant clipboard from the bottom to reveal a large internal storage compartment for stowing additional items.