I got the 5245-6000 some two months ago as my first vintage Seiko. In addition it has been my first King Seiko and my second Special (got the Grand Seiko SBGH035 first)

Now two months and a macro lens later, here are some more shots and impressions.
The watch works well with a slightly more formal attire - say business casual for instance. The dimensions are pretty good for wearing with a shirt, with both the 35mm case size and the relatively thin case easily slipping under the cuff when required. The dial is covered with lots of text but back in the day it was a feature for Seiko to be an automatic, officially certified chronometer (and I believe this could have been the last Seiko to wear this description, as far as I know). On the bottom is the applied KS logo, the Special logo and the Hi Beat specification. This is perhaps slightly misleading, as the 5245 movement only beats at 28,800 vph but at the time several manufacturers (including JLC) used this designation for 4 Hz watches.
Here a macro of the case back. The 6000 case is a 'front loader', with the movement being removed from the front of the monocoque case - designed in this way for improved water resistance. It comes with some instructions as to movement removal and how to operate the fast movement adjustment mechanism (the watch can be regulated with a screw without opening the case - a pretty cool feature). There is also an engraving for the original owner but I do not read Japanese so cannot tell what it says...
Here a picture of the crown and the side of the case. The crown has a KS logo applied and is relatively easy to operate. What you cannot do with it, though, is to wind the watch. So like with the Seiko 5 watches a lasso movement is required for the initial charging... The setting of the time is pretty standard fare and the watch has a quick set mechanism for the date.
Here a dial detail to show the linen finish, the applied hour indices and KS logo. The dial looks impeccable when looked at with the naked eyebut shows the 45 years of age when viewed under a macro lens. Decent but far from NOS.
Here a picture showing the hands. As popular at the time with a black line at the centre of the hour and minute hands, and a plain seconds hand. The finish and execution of the hands are a lot better than my skills with lighting the macro shot
Here the top of the dial, with the poorly reattached Seiko logo. Not very visible with the naked eye but something I intend to get fixed at the next service, since I cannot stop thinking about it since I've seen it under a macro

Some 'dusting' around the date window would not go amis, either...
Last but not least a Blomman style shot of the complete watch. While this has been my first vintage Seiko, it is most certainly not the last. I quite like it overall and the details - even if the watch is far from impeccable - are quite appealing in my humble opinion.
Thanks for viewing!