I looked but its a bit hard to make out.
but on the other hand there were lots of vids showing just how well they worked.
even one guy who was attacked, bleeding, the shark circling him ready for another strike until his mate went to help who happened to have a shield. the shark took off.
imo there is something there with electrical because that's the way the sharks work.
just how much or if they have it right who knows.
same as eating eggs. you can find anything to support a either view.
personally I would and will have a crack at the surf safe system.
I don't really believe a couple of stripes on ya board is worth much at all