36 mm Seamaster questions

Hoping to hear back from 36 mm Omega Seamaster (preferably Quartz) owners about your experiences with your watches, specifically:

• Servicing – is there much to service? Do they need anything besides gaskets and battery change done? Does it use a standard battery, so it can can be purchased aftermarket, or does it have to go back to Omega?
• Is anyone rocking one of these on a 7 to 7.5 inch / 18 to 19 cm wrist? I've been toying with the idea of one, but am assuming it would…

36 mm Seamaster questions