Being able to Communicate Underwater can really make Diving More-Fun. Having something to write on can cut down on playing charades underwater and get to the point. This Slate has the Best-Writing and Erasing Surface. It uses Bright Neon Tubing to retain the Pencil and includes a Male Quick-Disconnect Buckel. Compatriot the UN-QUICK System for attachment to your equipment to prevent it from being lost.