If you want service for your Movado this is someplace that won't void your warranty! A bit pricey, but that's what you would expect. You can save money taking your Movado to Precision Time, or one of those. And they'll probably do a respectable job. But given the cost of a Movado I prefer to take it to authorized service so that I'm completely covered if anything goes wrong.
Today was just a battery change. They first verify the seal, then change the battery, then verify the seal again. For $35 and a 1yr battery warranty.