Heard about this shop 5-6 years ago, tried to stop by once but they were closed, so I know them only by reputation, but they're supposed to be good.
http://www.watch2works.com/ The Watchworks in Solvang, California (roughly 1.3 hours very beautiful/scenic drive north of LA along the coast ~15' north of Santa Barbara). Tell your brother to make a weekend of it. Highly recommended sightseeing and wine tasting area.