Seiko 2220 Movement Details

Seiko caliber 2220 is a hand winding watch movement. Production was in the 1970s.
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Sub-brands: Chariot, Socie
Day / date?No
GMT / world time?No
Chronograph?No
Hacking?No
Rate:28,800 bph
Number of jewels:17, 21 or 24
Lift angle:48º
Size / diameter:17.2mm
Height:3.3mm
Development division:Daini (Kameido, Tokyo, Japan)
PDF guides: Technical guide : 2220A

Part Codes

Stem code: 351221 (short), 351222
Balance wheel code: 310222
Mainspring code: 201222

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Images

Seiko movement 2220A. Photo by Mizeni.
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