This is the Innovative Scuba The Quest" Quick Underwater Erasable Slate Features: High resolution screen Magnetic screen, erase, then write again Erases with the push of a button DIMENSIONS: 8.5" x 5.5" Has a removable double sided conventional slate COLOR: Yellow, Blue, Translucent Blue and Translucent Smoke An excellent tool for communicating while diving! You can write info you want to keep on the back with the pencil and the magnet side is great for conversation. "