LWNYCAfter using a plastic stick, which I usually use a small plastic pen, to push the clock out of the metal base, use a watch knife to pry the case back off.
If you are not familiar with a watch knife, it's something like this: http://www.amzn.com/B0001CULSS. You can use anything thin and sharp to pry it off, not just a watch knife.
The watch clock uses 1x 371 (SR920SW) battery.
LWNYCI am in the camp that don't like using watch winder. I personally think that watch winder may wear out the movement too quickly. I don't mind set date/time when I wear my automatics. I guess it may be worth it for perpetual calendar watch.
ChronoLoverI agree with you on the winder but an unwound automatic can be costly at the service shops. With my favorites, I put the winders on a timer to only turn, say 8 hours a day to mimic actual wearing. Over the years, I found that the Swiss movements tend to like this very much; including ETA to house brands from Vacheron, etc. Japanese movements like Seiko should not be left on a winder. Not sure why this is.
LWNYCThat's very interesting. I have not had any experience with Swiss automatics. I've primarily had experience with automatic movements from Seiko, Orient and Miyota. I suppose it's not too surprising to find different designs and types of lubrication between the Swiss and the Japanese.
ChronoLoverFor the Seikos I wore, I liked the 17 Alpinist the most. Never went into the Grand Seikos as the Sarb had most of their charms, 95%+ of the accuracy if you wear it all day and place it facing down overnight.
After half a year on a Japanese winder, the Alpinist gradually lost more and more seconds until I realize what was happening.
LWNYCYeah, nails will not work for that case back. You have to use a watch knife to pry the case back off. If you are not familiar with a watch knife, it's something like this: http://www.amzn.com/B0001CULSS. Otherwise, You can use anything thin and sharp to pry it off, like a pocket knife. Use cloth or something in between the knife and the case, to prevent from being scratched. I personally don't really care for minor scratches on the back, where you can't really see it regularly anyway.
Also, if I remember correctly, that case back needs quite a bit of force to be put back as well. So, you will also need a watch press, like this one: https://www.amazon.com/dp/B073PW85HS.
LWNYCYeah, it gets the job done, and hasn't let me down so far. However, you can get the best of the best, Swiss made Bergeon watch press. http://www.ofrei.com/page1680.html