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Watch Movement - Automatic - Seiko 7S36

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Watch Movement - Automatic - Seiko 7S36

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Name Seiko 7S36
Manufacturer Seiko (Details)
Type Automatic
Jewel Count 23
Year(s) of Production 1996
Diameter (mm) 27.0
Height (mm) 4.8
Frequency (vph) 21,600
Power Reserve 41
Chronometer No
Hacking No
Date Yes
Hand Winding No
Quickset Yes
Shock System Diashock

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History: The 7S26 family was introduced in 1996 as a mainstream automatic watch movement, replacing the Seiko 7002 in many cases. Although earlier Seiko calibres featured quickset date using the crown in second position, the 7S26 adds a counter-clockwise quickset day feature as well. This family is non-hacking and not capable of hand winding, unlike its follow-on movements like the 6R15 and 4R35.

The 7S36 is substantially identical to their ages-old non-hacking, non-hand-windable 7S26 except for the addition of 2 cap jewels and their associated bridgelet. This takes the total jewel count to 23 vs the 7S26's 21. According to some, the 2 extra jewels don't do anything, but theoretically, non-functioning jewels cannot be included in the total count. One opinion I have seen is that the 2 extra jewels were introduced to improve shock-resistance. This is how they get around the "functioning" rule.

Accuracy: Typically, the result over a few weeks' worth of timing: a consistent 2 seconds per day. Functions: Hours, minutes, central seconds, day/date calendar. Country of Manufacture: Japan/Malaysia. Shock System Seiko Diashock.

Info: Seiko Holdings Corporation (セイコーホールディングス株式会社 Seikō Hōrudingusu Kabushiki-gaisha), commonly known as Seiko (/ˈseɪkoʊ/ SAY-koh), is a Japanese holding company that has subsidiaries which manufactures and sells watches, clocks, electronic devices, semiconductors, jewelries, and optical products.

The company was founded in 1881, when Kintarō Hattori opened a watch and jewelry shop called "K. Hattori" (服部時計店 Hattori Tokeiten) in the Ginza area of Tokyo, Japan. Eleven years later, in 1892, he began to produce clocks under the name Seikosha (精工舎 Seikōsha), meaning roughly "House of Exquisite Workmanship". According to Seiko's official company history, titled "A Journey In Time: The Remarkable Story of Seiko" (2003), Seiko is a Japanese word meaning "exquisite" or "success" ("exquisite" is usually written 精巧 from Chinese jīngqiǎo, while the meaning "success" is usually written 成功 from Chinese chénggōng).

From Wikipedia

Item created by: gdm on 2018-10-09 12:21:45. Last edited by gdm on 2018-10-16 19:05:36

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