My Vintage 1976 Hughes Aircraft Calculator Watch/Battlestar Galactica

This is my Vintage 1976 Hughes Aircraft Calculator Watch. This particular model was not offered commercially. It was only sold to Hughes Aircraft employee's at Hughes company stores. these watches were also sold to the movie studio that produced Battlestar Galactica as props for the show. I bought this at my local thrift store the other day for $9.99. It looks to be in unused condition. I bought some batteries for it and the calculator seems to work but I think some of the numbers are a little gummed up from sitting for 30 + years. Still trying to figure out how to set the time. I did a little research on this watch and seems to be one of the first model calculator watches ever. My watch is pictured in the first pic, the other pics are screen shots from the watch in action on some of the Battlestar Galactica stars. Hope you enjoy this pretty cool piece of history. I happen to be a big fan of Howard Hughes.
Enjoy,
Glenn