This limited edition captures the power of the Japanese naval forces called “Suigun”, the traditional armed forces on water. In the island nation of Japan, the Suigun who lived in coastal areas were active as waterborne soldiers since ancient times, playing an important role in maritime safety, trade and distribution, maritime security, and maritime transportation by pilotage.

The color scheme of the dial is inspired by the “Shu-iro” which is a vermilion color-lacquered armor used by the naval forces. It was said that wearing this red, the most conspicuous color on the battlefield, proved that you were brave and courageous, and that your courage could inspire not only yourself but also your entire troop.

The shape of this limited edition is nicknamed by Seiko fans “King Samurai” – because of its angular shaped design. The upper surface of the case and the lug is composed of sharp surfaces, as if they were sliced off with a Japanese sword and the powerful case with protruding shoulders evokes the Samurai’s armor.


The mesh pattern on the side of the bezel captures the diamond patterns of the handle of a Japanese sword. Seiko Prospex Limited Edition “Shu-iro”, ref. SRPH61K1 is available in January 2021, edition of 3.500
Seiko Prospex Limited Edition “Shu-iro”
Reference: SRPH61K1
Case/Dial: 43.8mm diameter x 13.4mm height, stainless steel case, red ‘shu-iro’ coloured dial with mosaic design
Water Resistance: 200m (20 bar)
Movement: Calibre 4R35, automatic, 23 jewels
Frequency: 21,600 vph (3 Hz)
Power Reserve: 41h
Functions: Hours, minutes, seconds, date
Availability: limited to 3,500 pieces, January 2021