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, the pen is more convenient for the diver to write. 3. 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. 4. Elastic Arm Straps: Arm straps are unisex, elastic adjustable, can be worn by both fat and thin people. Product model is UW‑193TD luminous. 5. Good Features: Underwater 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 WoodProduct Model: UW-193TD LuminousColor: As Pictures Shown Weight: Approx. 150g/5.3oz Features: Can Be Used Repeatedly, Can Communicate During Diving, Anti Corrosion Purpose: 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 Rings1 x Rubber Accessories