What is this lure?

Ok, it is not actually a lure, they are sinkers, and they come in a filet
lined case. They come two in a box, they are battery operated, and they
omit a ping sound when wet. I guess Bill Dance sold them on an infomercial.
The kit includes one bullet and one egg sinker.

One of my buddies show them to me. First do they work? He got them as a
Christmas gift three years ago and has never used them. When I asked why,
he said they cost $69 and he is afraid he will lose them. They look pretty
cool, and only ping or tick when they become wet so as to save on battery
life.

I wanted to try them so bad, I offered to buy them off of him, but he
refused stating he couldn't sell a Christmas gift. He probably saved me a
butt chewing from the wife for wasting money. So, again, do they work?

--
Craig Baugher
www.yessssports.com