The Blancpain Villeret Demi-Fuseau Horaire is a unique travelers watch that can easily adjust to half time zones. It allows for 30-minute adjustments to the main time without changing the reference time at 12:00. The model number 6661-3631-55B features a stunning red gold case and a beautifully crafted white grand flinqué enamel dial. The case back also has a convenient hinged cover to protect the see-through glass.