Scubapro Underwater Slate. Communication is very delicate to achieve while being underwater. in some circumstances, you will appreciate being able to write notes, data, exchange information with your buddies, refer to your dive plan or navigation headings. Features: Sturdy plastic underwater writing slate Lightweight, holds in your BC pocket Phosphorescent plastic to help with writing in low light conditions Includes pencil, snap hook and eraser Dimensions 130x150mm