Seiko Caliber 7S36 Watch Movement

Manufacturer	Seiko
Caliber Number	7S36, 7S36C
Movement Type	Automatic
Jewels	23
Vibrations Per Hour	21,600 bph
Shock System	Seiko Diashock
Power Reserve	41+ hours
Magnetic Resistance	4,800 A/m (60 gauss)
Winding Direction	Not hand-windable
Hacking?	No
Diameter	12”’ / 27mm
Height	4.8mm
Functions	Hours, minutes, central seconds, day/date calendar
Country of Manufacture	Japan/Malaysia
Known Brands	Seiko 5 Sport SNZG15J1 (add more in the comments below)

The Seiko caliber 7S36 is an automatic movement used in many popular Seiko divers and the entry level Seiko 5 watches. This movement was first released to the market in 1996. Seiko dive watches, such as the Orange Monster, have since been upgraded to the caliber NH36 (aka 4R36), making Seiko collectors happy because the 7S36 seen here does not hack and is not hand-windable – two functions that have become more and more popular. The caliber 7S36 is the last in the series.

Operational temperature range: Between -10 ºC and 60 ºC (Between 14 ºF and 140 ºF)