New QUEST Underwater Scuba Diving Magnetic Communication Slate (Yellow) with FREE Quest Holster ($9.95 Value) Magnetic Communication Screen.... Use for fast, effective underwater communication Includes convenient protective rotating cover.... Quickly erases with the push of a button Write with Magnetic Stylus.... Reversible Data Storage Removable slate, even underwater.... Use both sides for twice the space Record valuable information before, during and after a dive.... Write with standard pencil