The 5230G-001 world time reference from Patek Philippe is a highly coveted timepiece by frequent flyers all over the world. It not only has the ability to indicate local and home times but the ability to display 24 time zones which are perfect for the International businessman. The 5230G-001 has a white gold case that is 38.5 mm in diameter and 10.23 mm thick. The case has a sapphire crystal and case back as well as a smooth fixed white gold bezel. The 5230G-001 dial features a manually guilloched dial center with a motif inspired by a historic Patek Philippe model and gold applied hour markers. The 5230G-001 is powered by the 240 HU Caliber that displays 24 time zones with day-night indicator and a power reserve of 48 hours. It comes with a handstitched black, alligator strap that has a fold-over clasp. It has a water resistance of 30 meters (98 feet).