I have been scrounging the internet on and off for a couple weeks now for information on the Kako Auto2500S flash. There's NOT a lot of information on this unit. It's old. Late 70's, early 80's. So it's understandable. Tonight I was doing a google for "Kako flash" on page 4 of that search but what should I find.... The forum posting HERE for "Kako flash". It took about 4 hours for Google to pick up the listing here and stash it into their search engine.