Approximately 2 percent of the watches produced are tested for winding performance, accuracy, function of the movement, general performance and water tightness.

FORBES: Montblanc Earns Its Place Among Swiss Watchmakers

The 12, 700-square-foot Energy Star-certified house was crafted from low-toxic materials, withstood air tightness tests on the insulation, and has a water furnace geothermal system that provides hot water, radiant floor heat and air conditioning.

FORBES: Off-The-Grid Mansions