Just the battery I needed.  Took several SEIKO watches to a local watch repair guy for new batteries.  He was a long time business, so I trusted him. When I went to pick them up, he said they were not serviceable because they had not been properly cleaned and cared for.  Stuck them in a drawer, cuz I could not bear to throw them away as they were all over $200 each.  I bought a watch tool from Amazon and took the backs off of all of my SEIKO watches, tried some batteries I had (not correct size) and they all worked.  Now, all my watches work.