Hi, I finally got a grail tuna for me. Kinda out of the blue, random wis moment. Lol.
I'm really liking it as well, much more comfortable than I thought. They also look huge in pics, as I've never seen live, but sits well on the wrist and i'm only 6.5" wrists.
I'd like to ask if you know what battery goes in this? Do I need a special Seiko type? Do I need Seiko service for battery change?
Also, I have an english/farsi day wheel. I'd really wanted a kanji wheel. Where can I source a day wheel for swap if possible and can I use day wheels from another movement to fit into the 7549-7010?
gotta take some pics.
here's sellers pic.