Omega Seamaster 2003 - general questions

Hi,

Recently my father gave me a omega seamaster from 2003. I don't know much about watches myself and I have a couple of questions that I hope someone might help me with.

The metal band that comes with, is to small and I will have to get 1 or 2 chain blocks to fit me. What's the best way to go about this, and to make sure I get genuine parts?

I wouldn't mind getting a black rubber wristband for this watch as well, but I couldnt find a black rubber one on the omega site, and how do I check that the wristband will fit this model?

Finally, In the original warrant card there are 3 numbers. the watch number, witch I'm assuming it's the sn. A ref number, is this the model number? And the number 1016 is also on the card under the date. There is a piece of paper wit calibre 1164 written on it. Is that the model number?

I'll appreciate any help. As you can see I'm quite new to Omega and the world of watches.
Thanks

Thanks for your answers, much appreciated

You have a nice watch there, @Megaton The polished bezel will probably drive you crazy but the scratches make the watch your own. My ref. 2298.80 chronograph - the titanium version of your watch - needed a lot of attention from Archer after 20 years and it had allegedly been serviced prior to my purchase. It started running very poorly but after getting it back from Archer, it runs damned near perfect. Next time, I'm going to have it fully restored. Yeah, it'll be expensive but it's special to me as I'm sure your watch is to you.

it was never serviced, but at the same time my father only wore the watch for the first 5-7 years, and it has been in the box since.

Then it's definitely not worn out and has lots of life left in it. I'd find a good, trusted, and proper watchmaker who'll listen to your wants for the watch and get the movement and case serviced. The dial, hands, and case abound be in good enough condition. Some people like their used watches to be pristine at one point in their ownership so you may want to have some case and bracelet restoration/polishing performed.