ince the beginning of Seiko in 1881, the company has continued to innovate in line with founder Kintaro Hattori’s philosophy to be “Always one step ahead of the rest.” In 1924, the company introduced the first wristwatch with “Seiko” on the dial, signifying the beginning of the Seiko brand. The year 2024 marks the 100th anniversary of this landmark event.

The new watch features a sub-dial at 12 o’clock that measures elapsed time in increments of 1/20th of a second. Thanks to the new movement design, this is the first Seiko Astron to have a sub-dial at the 12 o’clock position. A sub-dial at the six o’clock position displays the time in a second time zone and becomes a 12-hour counter when the stopwatch function is used. The chronograph’s use is indicated on the sub-dial at the nine o’clock position, which also displays the charging status, day of the week, and in-flight mode.

The new Caliber 5X83 automatically connects up to twice a day to the GPS network, and connects manually with the simple push of a button, to maintain its precision anywhere in the world**. The time of day displayed on the main dial can be switched with the one on the six o’clock sub-dial by holding down two buttons for three seconds. The main dial and sub-dial hands move simultaneously, making the time required for the transfer significantly shorter with the new Caliber 5X83 than with Caliber 5X53.

The limited edition’s all-black case and bracelet, sunray-patterned dial, and yellow-gold-colored accents evoke a view of the earth at night as seen from an orbiting satellite, an image that perfectly channels the groundbreaking technology behind Astron GPS Solar. The two-part bezel consists of a multi-faceted ceramic upper portion and a yellow-gold-colored titanium frame to create a brilliance that further evokes this shimmering night view. Ceramic is also used for the bracelet’s center links and the tip of the crown.