Let me start by saying this little slate has surprised me in ways I never expected. As someone who dabbles in both scuba diving and swim training, I've put this product through its paces in multiple environments.

The 6" x 5" size is perfect - large enough to be useful but compact enough to stash in a BC pocket or clip to your gear. That bright yellow lanyard? Total lifesaver when you drop it (and you will drop it) during a dive.

Underwater performance is solid. During my last rescue diver training at 45' with terrible visibility, this slate was our communication lifeline. The included pencil writes clearly enough, though I agree with other reviewers that a grease pencil would be better for serious diving applications.

Here's where it gets interesting - this thing has become my shower-side brainstorming buddy! Those brilliant ideas that always seem to come when you're shampooing your hair? Now they don't disappear down the drain. The writing stays put through water exposure, though erasing requires a Magic Eraser (pro tip: keep one with your slate).

For swim training, it's been invaluable for tracking intervals poolside. The included wooden pencil works fine for this application, writing lightly but legibly on the deck.

The clip system is simple but effective - no fumbling with complicated attachments when you're wearing gloves. My only real complaint? No included eraser. Not a dealbreaker, but it would be nice to have one included.

Bottom line: This affordable slate performs well beyond its intended use. Whether you're mapping dive sites, tracking swim intervals, or capturing shower epiphanies, it delivers where it counts. Just grab a Magic Eraser and maybe a grease pencil if you're serious about diving applications.