We made The Silver Fume City Limits GMT to be rugged and extremely accurate. We use the Swiss-made Sellita SW330 automatic movement with a 42 hour power reserve. Being a GMT watch, it can measure two time zones making it perfect for keeping tabs on home whenever you travel (or that special place you'd like to travel back to). The automatic Swiss movement means, aside from initial wearing (or after a few days of not wearing the piece), there's no need to wind because it’ll power up with your natural movements. Water resistant to 200 meters, hassle-free, and long-lasting, this limited-edition timepiece will make a great addition to your collection!