Description: 【Underwater Communication Tool】: Ideal for divers to communicate or information underwater, this Writing Slate for Diving comes with a spring hook and quick release buckle for easy access and attachment 【Material】: Made from a pc material that withstands seawater without damage, the Diving Writing Board is designed for repeated use 【User Friendly Design】: The Underwater Writing Pad rigid design eliminates the need for pages, while the attached pen floats in water, preventing it from sinking and making writing effortless 【Convenient】:The Scuba Notepad with its spring mechanism, there's no need to detach the hook; simply release the quick buckle to extend the board to a comfortable writing position without fear of losing it 【Versatile】:The Underwater is suiable for professional divers, snorkelers, or underwater researchers. It's not just for communication, but also great for taking notes of the marine life you or mapping out dive sites Size Chart: 15x12cm/5.91inchx4.72inch  thick : 0.12inch Package Includes: 1  Underwater Writing Slate