-It’s not just refinishing of the case, but rather cleaning and lubing the movement; you don’t want the innards to grind themselves to pieces. That being said,

-It’s not just refinishing of the case, but rather cleaning and lubing the movement; you don’t want the innards to grind themselves to pieces. That being said, my everyday Omega (a PlanetOcean diver) has gone for 11 years without a service and still keeps excellent time; once timekeeping deteriorates, I’ll have it cleaned, lubed and adjusted at my local watchmaker’s. Oh, and the case will be refinished over my dead body; it has more or less literally gone to war with me, got banged up a bit, lived to tell the tale and is still ticking.