Feature:1. Main Purpose: The wrist writing dive slate can help the communication between the diver and the diving partner, and the underwater situation.2. Floating Pen: The pen will be suspended in the water and will not fall. When used underwater, it is more convenient for the diver to write.3. 3 Panels Design: Wrist writing slate for technical diving, the arc shape fits well with the back of the hand, three piece design, smaller size, easy to carry.4. Hang Position: Diving wrist writing slate can be hung on a diving buoyancy vest. The attached pencil is fixed to the writing board by a hose.5. Good Features: 3 panels wrist writing dive slate can be used repeatedly, can communicate during diving, anti corrosion performance.6. Underwater Communication Tools: The diving writing board is a tool for underwater communication or swimming pool communication.Specification:Item Type: Wrist Writing Dive Slate Material: ABS + Composite WoodColor: As Pictures ShownWeight: Approx. 140g/4.9ozFeatures: Can Be Used Repeatedly, Can Communicate During Diving, Anti CorrosionPurpose: The writing board can help the communication between the diver and the diving partner, and the underwater situation; the pen belt will be suspended in the water and will not fall. When used underwater, it is more convenient for the diver to write.Package List:1 x Wrist Writing Dive Slate1 x Pencil4 x O Rings