1971 King Seiko HI-Beat Chronometer (Ref. 5626-7040) Blue Dial

Fans of Seiko have almost certainly heard the fascinating story of the brand's inter-company competition during the 1960s and 1970s. Back then, Seiko had two separate factories creating its watches, with Grand Seiko being produced at the Suwa factory and King Seiko at the Daini factory. Seiko’s objective behind having its two factories compete against each other was to promote progress through competition, with the end goal of building the best timepieces possible. Something that seems to have worked quite well for them.

While Grand Seiko ultimately won out, King Seiko watches have plenty of clout and cache themselves, with a production window that ran from approximately 1961 until 1975. This particular King Seiko Hi-Beat Chronometer ref. 5626-7040 dates to 1971, putting it at the latter end of the Daini factory’s line of luxury Seiko watches. The “Hi-Beat” name is due to the automatic chronometer-grade movement, which beats at a frequency of 28,800bph and offers incredible precision from within the watch’s monoblock case.


Stock # KSKO56267040
Brand King Seiko
Style HI-Beat Chronometer
Model 5626-7040
Serial 15XXXXX
Size Men's
Material Stainless Steel
Dial Blue "Aged"
Millimeters 36
Bracelet King Seiko Bracelet


The cushion-shaped monoblock case is in excellent condition, measuring 36mm in diameter with an 18mm lug width. The case back is also in excellent condition with minimal signs of use visible and featuring the King Seiko "medallion" and chronometer rating. The watch is finished with its original King Seiko stainless steel bracelet. The bracelet retains 18 links that show some stretch and it will fit up to a 7-inch wrist.


The deep, inky blue sunburst dial has aged to an incredible finish that conjures images of a night sky. The matte finished rectangular indices and stick hands sit nicely upon the dark blue background, as does the day-date window, which features both English and Kanji figures for the days.


None. Watch is functioning and keeping time, previous service history is unknown.