You have to remember that every dog today was created by a person or group. There's no such thing as a natural dog. Cavemen bred wolves and they became every kind of dog that exists.
The wrinkles could just be an attractive decoration that the original breeder wanted. I'm sure that Wikipedia could tell more.
The ETA clone and the A21j are completely different animals. You're looking at somewhere north of $100 to replace the clone if that is what you have. You'll have to verify what's inside before I can give you any more advice.
Use some blue "painters tape" to mask off the brushed sides to the clasp, and then have at the polished area with the buffing wheel of the Dremel tool kit.
A running movement with a low power reserve normally means that it is badly oiled or dirty. Tell me this .. when you wind the watch, is the action very smooth or is there a tangible buzzing sensation in your fingers?
If this watch comes standard with an A21j movement, then you will pay roughly $24 USD to buy a new one. It is not worth servicing when the price of a new piece is so low.
You will find that any high-polish metal surface is utterly destroyed by even the slightest grit and dust. Buy an inexpensive Dremel Tool and some metal polishing rouge to keep it looking it's best.
Just be aware that depending upon the shipping times to China, etc it can be as much as 3 months round-trip for a watch sent back for repairs.
Perhaps your dealer will source for you a perfect bezel and your watch man can install it, and repair the date mechanism.
There are forum-trusted people who can work miracles on 775x but it's an art. I always try and warn newbs away from these watches, since they are like buying a Ferrari.
You have to be willing to not just buy one but also to lay out the money (repeatedly?) to maintain one. It's a high-performance instrument.
Paint can be replaced and movements easily fixed. You can either ask the dealer to replace your watch or you can have it fixed by a trusted watch technician.