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Seiko 4R36 Movement Details

Thumbnail image of Seiko movement 4R36A (the same as NH36) in model 4R36-04B0 (SRP665). Seiko calibre 4R36 is an automatic (with hand winding) watch movement. Production started around 2011.
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Sub-brands: Prospex, Seiko 5
Power reserve:41 hours
Accuracy:+45/-35 seconds/day
Day / date?Day + date
GMT / world time?No
Chronograph?No
Hacking?Yes
Rate:21,600 bph
Number of jewels:24
Lift angle:53º
Size / diameter:27.0mm
Height:5.32mm
Notes:Also sold as NH36. Considered as an upgrade to cal. 7S36.
PDF guides: Technical guide : 4R35B & 4R36A
Related movements: 4R35 4R37 4R38 4R39

Part Codes

Stem code: 351200 (tap 10)
Balance wheel code: 310197
Mainspring code: 201083
Screw codes: 012168, 012354, 012420, 012485, 012919 (ratchet wheel screw)

Videos

Images

Seiko movement 4R36A (the same as NH36) in model 4R36-04B0 (SRP665).
Seiko movement 4R36A (the same as NH36) in model 4R36-04B0 (SRP665). Photo by er Guiri.
Seiko model 4R36-04B0 (SRP665).
Seiko model 4R36-04B0 (SRP665). Photo by er Guiri.
Seiko movement 4R36A (the same as NH36) in model 4R36-04Y0 (SRP777), the "Turtle" re-issue.
Seiko movement 4R36A (the same as NH36) in model 4R36-04Y0 (SRP777), the "Turtle" re-issue. Photo by gabihil.
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