SEIKO PREMIER KINETIC PERPETUAL CALENDAR - SNP161P1

Kinetic Perpetual combines the beauty of a classic mechanical perpetual calendar, correct until February 28, 2100, with the advantages of Kinetic – powered by the movement of your body – perpetual quartz accuracy, and up to 4 years autonomy when not worn.

This caliber is a triumph of classical watch-making and modern microelectronics. With 232 parts, which is almost the same number as other high-class mechanical chronograph watches, and the world's smallest ultra-sonic motor, just 0.4 mm thick, the Kinetic Perpetual caliber sets a new standard in Perpetual Calendar watches.

This remarkable calendar is also governed by a photo sensor, which recognizes a certain mark on each gear and judges, and corrects the date, day, month and year, including February of leap years.