Rado Ceramica Chronograph Jubile NEU incl Mwst mit Box+Papieren

New PO to add to the family! Noob question!
Hello gentlemen! I received a lovely gift for the Valentine's Holiday - a brand new Seamaster PO Chrono 2210.51 (yes WITH the orange numbers) and I like it! I know there's some ruffled feathers about the color ;)Great watch! I originally had decided between the Seamaster 300M Chrono (212.30) or the Speedmaster Broad Arrow (321.10) with the Arrow winning out in my mind. Not at all disappointed with the surprise PO though! Quick question, this is my first Omega - my first high-end watch of any kind actually. I've noticed that my watch has stopped running a few times at night in the week I've had it. I'll wear it about 10 hours or more a day, I work as a restaurant manager and am walking most of that time. In my mind, it seems with an auto winder that should do the trick, but I've woken up to find it dead on more than one occasion. What am I doing wrong? What do I need to do? or Is something wrong with my watch? Help me out veterans also interested in any other tips, tricks, advice for

Black or brown leather strap for black dial field watches?
I'm pretty sure I'd go with a black strap on a black dial dress watch, but what about a field watch? Photos if you've got 'em. If you think brown, would you go dark, light, medium, honey, tan, etc.?Thanks for opinions and/or photos.

How big does 15400 wear?
I have my name down for a 15202, but because delivery is expected in 2019, I am debating whether I should buy a 15450 or 15400 to ease the wait in the meantime. I have wrists that are on the smaller side, and usually prefer the size 40~42 for sporty watches. The 15400 is 41mm according to official specs, but are there any comparisons to how it really wears? How does it compare to a Omega speedy (42mm) or the Rolex Explorer 2 Polar (42mm)? And same question for the 15450. 37mm officially, but I heard many people say it wears more like a 39mm Explorer. Thanks in advance!

Nautilus 3800
Need some input on the 3800 in SS. Tried to search a bit about the size but couldn¡ät find any pics that compare the size to a Rolex or a AP RO for example. So how does it wear compared to a RO 14790 or a 36mm DJ?Anything else i should keep in mind when considering a 3800?

Is the Patek 5205 a dress watch?
Conventionally, dress watch should be very slim so it can hide under the sleeves and be very basic two or three hands, mostly no date. My 5205 strictly speaking doesn't seems to be fit that category. But it does fits under a shirt sleeve. The Calatravas are the official dress watch line for PP. So what is the 5205? Casual watch? Sports watch? What do you think? Well, anyway, it gives me an opportunity to share the above picture.