

I very similar looking watch was identified as a CompuChron on a previous thread ( http://www.dwf.nu/viewtopic.php?t=3469&highlight= ) so it would be a strong possibility.
The watch contains a module produced by Hughes Aircraft Co, if you open up the back it should have a date sticker over the top of the quartz crystal which will give you the year and month that it was produced also around the side it should be marked with the country where the module was produced.
There is an abundance of information relating to the LED watch on this forum, have a browse through and enjoy.

$40 is very cheap for a working 70s LED, well done - you got a bargain.
