More evidence the 1960’s and 1970’s were a golden era for Seiko is evident in its long-running 700X line – like this Sony Corporation-signed 1970 Seiko 7005-8000 automatic here, with hour indices reminiscent of high-end Grand Seiko models.  This Seiko Sony also comes with a 1960s Seiko promotional matchbox.
 
Sony Group Corporation is a Japanese multinational conglomerate headquartered at Sony City in Minato, Tokyo, Japan. The Sony Group encompasses various businesses, including Sony Corporation (electronics), Sony Semiconductor Solutions (imaging and sensing), Sony Entertainment (including Sony Pictures and Sony Music Group), Sony Interactive Entertainment (video games), Sony Financial Group, and others.
 
Sony was founded in 1946 as Tokyo Tsushin Kogyo K.K. by Masaru Ibuka and Akio Morita.  In 1958, the company adopted the name Sony Corporation.  Initially an electronics firm, it gained early recognition for products such as the TR-55 transistor radio and the CV-2000 home video tape recorder, contributing significantly to Japan's post-war economic recovery.
 
After Ibuka's retirement in the 1970s, Morita served as chairman until 1994, overseeing Sony's rise as a global brand recognized for innovation in consumer electronics.  Landmark products included the Trinitron color television, the Walkman portable audio player, and the co-development of the compact disc.
 
Expanding beyond electronics, Sony acquired Columbia Records in 1988 and Columbia Pictures in 1989, while also entering the home video game console market with the launch of the PlayStation in 1994.  In Japan, the company further diversified by establishing a financial services division.  In 2021, the company was renamed Sony Group Corporation as it transitioned into a holding company structure, with its electronics business continuing under the name Sony Corporation.
 
As of 2020, Sony holds a 55% share of the global image sensor market, making it the largest image sensor manufacturer, the second largest camera manufacturer, a semiconductor sales leader, and the world's third-largest television manufacturer by sales.
 
Although Sony is not part of a traditional keiretsu (a set of companies with interlocking business relationships and shareholdings that dominated the Japanese economy in the second half of the 20th century), it has historical ties to the Sumitomo Mitsui Financial Group, dating back to the 1950s when it relied exclusively on Mitsui Bank for financing. 
 
Sony is publicly traded on the Tokyo Stock Exchange and also maintains American depositary receipts on the New York Stock Exchange, where it has been listed since 1961.  As of 2021, it ranked 88th on the Fortune Global 500 and 57th on the 2023 Forbes Global 2000 list.
 
The Seiko 7005
Seiko debuted the 700X line in 1969 and produced it until the 1990’s, when it was replaced by Seiko’s famed 7S26 line.  The 7005 line features Seiko’s Magic Lever winding system, allowing the automatic rotor to gather energy in a bi-directional fashion. 
 
The 700X line came in several sub-variants, which included the 7005 here, as well as the famed (and much "Feiko'ed") 7002, 7006, and 7009 - all of which are almost identical and share numerous parts in common (which also makes watch servicing easier and inexpensive).  The 7005 is date only, with the 7009 as a day/date and 7002A date only (and with a different auto winding weight).
 
When comparing the 7S26 to the 7005, the lineage is more than a bit obvious.  That said, there remains much in favor for the 7005 vis-a-vis the 7S26 movement, as the calendar mechanism of the 7005/9 remains superior in design and construction, and the overall quality of finish on the 7S26 is substantially lower than its predecessors.
 
This Seiko 7005 comes with on a leather ostrich strap, and with nylon strap, spring bar tool, and rugged travel case.