Features: This professional dive slates with an integrated underwater compasses provides seamless writing and precise navigation for divers, enhancing safety and convenience during underwater explorations. Made from durability PVC materials, it resists water pressure and wear, features a 360 degree rotating clip for secure attachment, and allows easy hand erasing for repeated use without tools. Ideal for scubas divers, underwater photographers, and marine biologists who require reliability gear for recording dive log and observations in various environment. Use it in depth sea dives to jots down key like dive points, marine life sighting, or communicate essential information efficiently while submergible. Its multifunctional design ensures long lasting performances, making it a must have accessory for accurate note taking and navigation in challenging scubas diving scenarios. Specifications: Dimension:31×12.5cm/12.2×4.92in Component:PVC materials Package Includes: 1Set Diving communication slates note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.