Originally released in 2018, the 6R64 automatic GMT movement features a 24-hour hand that can be adjusted to a second time zone or indicate the AM/PM status of the main time. Employing 29 jewels, Caliber 6R64 beats at a frequency of 28,800 vph, has a power reserve of 45 hours, and features a power reserve indicator complication in addition to the 24-hour GMT hand and date calendar.