Feature: 1. 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 Wood Color: As Pictures Shown Weight: Approx. 140g/4.9oz 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 Slate 1 x Pencil 4 x O Rings [Underwater Communication Tool]---The wrist writing dive slate can help the communication between the diver and the diving partner, and the underwater situation. he diving writing board is a tool for underwater communication or swimming pool communication. [Easy to Carry]---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. Equipped with strong snap clip, easily and conveniently clip onto for vest. [Very Practical]---Diving wrist writing slate can be hung on a diving buoyancy vest. The attached pencil is fixed to the writing board by a hose. The underwater writing slate has high practicality, which is wonderful to take with for outdoor water sports, such as swimming, diving and more.which is very practical and convenient. [Recyclable]---The pen will be suspended in the water and will not fall. When used underwater, it is more convenient for the diver to write. The underwater writing board can be used for recycled use, it is perfect for making some notes underwater, which is very practical and convenient. [High Quality]---3 panels wrist writing dive slate can be used repeatedly, can communicate during diving, anti corrosion performance. It is not easily damaged, has reliable quality and fluent writing ability.Extremely durable shatterproof corrosion free material. [Underwater Communication Tool]---The wrist writing dive slate can help the communication between the diver and the diving partner, and the underwater situation. he diving writing board is a tool for underwater communication or swimming pool communication. [Easy to Carry]---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. Equipped with strong snap clip, easily and conveniently clip onto for vest. [Very Practical]---Diving wrist writing slate can be hung on a diving buoyancy vest. The attached pencil is fixed to the writing board by a hose. The underwater writing slate has high practicality, which is wonderful to take with for outdoor water sports, such as swimming, diving and more.which is very practical and convenient. [Recyclable]---The pen will be suspended in the water and will not fall. When used underwater, it is more convenient for the diver to write. The underwater writing board can be used for recycled use, it is perfect for making some notes underwater, which is very practical and convenient. [High Quality]---3 panels wrist writing dive slate can be used repeatedly, can communicate during diving, anti corrosion performance. It is not easily damaged, has reliable quality and fluent writing ability.Extremely durable shatterproof corrosion free material.