I picked up some of these after reading about something like this on here. Here is the link for what I got. Here
I basically wanted to check the proof of concept for them. I lost one today when my mask dropped into the water off my head. But on the first dive they worked great. Now I'm going to have my watcher maker (who is also a diver) glue them in with what is used for gluing magnifiers onto watch crystals.
I basically wanted to check the proof of concept for them. I lost one today when my mask dropped into the water off my head. But on the first dive they worked great. Now I'm going to have my watcher maker (who is also a diver) glue them in with what is used for gluing magnifiers onto watch crystals.