Seiko Sharp Edged SPB223J1

Released in 2021, the Seiko calibre 6R64 is an automatic movement used in the Presage Sharp Edged Series GMT watches. In addition to hours, minutes, and seconds, it features a power reserve indicator, a running seconds sub-dial at six o’clock, and a GMT hand to mark the second time zone. It is composed of 29 jewels and runs at a frequency of 28,800 vibrations per hour. Made in Japan, calibre 6R64 boasts a power reserve of 45 hours.