Attracting tuna with voltage

I just had contact with a tackle store manager and he ordered 50 more of my Portable Black Boxes. This is the second order this year, where he normally sell about 20 - 30 in a season. I asked him about the increased interest. It seems that some tuna trollers have been using these for a second year now and the report is: lines that are equipped with my portable black box's are outfishing their plain ones, "hands down". This was originally designed for sports fishing for salmon, and was simply attached to the release clip tether, or near the weight. These are now attached inline where your tuna jig leader attaches to the main line (a few feet from the jig).
These are a long lasting electrochemical cell with no batteries, and no charging or re-charging required. Get em wet and they work instantly.


These are a long lasting electrochemical cell with no batteries, and no charging or re-charging required. Get em wet and they work instantly.

