|Size - diameter excluding winding crown:||40mm|
|Size - length including lugs:||49mm|
1970’s black round dial with baton for each hour. On the outer of the dial you have a tachymeter graduated up to 500. Yellow Arabic numerals mark the minutes. At 6 o’clock comes the second sub dial with green Arabic numbers. There are two windows for date and day (Spanish calendar) at 3 o’clock. The hands are in stainless steel with baton design. The hand for the chronograph is yellow. The luminous for the hands and batons are fine. It is a screw back case with engraved outside “Seiko – Stainless Steel 6139-7100 – Water Resistant – 11725 – Japan J. It is an automatic movement with caliber 6139. The watch comes with a stainless steel bracelet and single folder clasp buckle with Seiko logo.
It took only 40 years for the Kintaro Hattori firm, which was established in Tokyo in 1881, to become what it is known as throughout the world today as Seiko. 1892 saw the opening of the Seikosha plant, and in 1917 K. Hattori & Co. Ltd became a joint stock market. In 1924 it was given its internationally known name. From then on, progress was steady as the company developed in stages into the world’s number one clock producer with 350 million movements a year roll off the Seiko Epson production lines. As early as the 1930’s the company was displaying its wares in Tokyo’s fashionable Ginza shopping district. In 1964, Seiko was the official timekeeper of the Tokyo Olympics. In 1971, it introduces on of the world’s first automatic chronograph along with an early quartz wristwatch. From then on, electronics dominated time-measurement at Seiko. In 1981, Seiko tool over Jean Lasalle SA, a Geneva luxury brand that had gone bankrupt.
Automatic movement with caliber 6139 with 21 jewels, 21,600 A/h and 45 hours of power reserve.
Diameter excluding winding crown: 40mm
Length including lugs: 49mm