Seiko 2205 Movement Details

Seiko caliber 2205 is an automatic (with hand winding) watch movement.
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Day / date?Date only
GMT / world time?No
Chronograph?No
Rate:28,800 bph
Number of jewels:17, 21 or 25
Lift angle:48º
Size / diameter:17.2mm
Height:5.65mm
Stem code: 351221 (short), 351222, 372220 (movement side), 373250 (crown side)
Balance wheel code: 310221
Mainspring code: 201220
Screw codes: 012121 (stud screw), 012129, 012204, 012208, 012240, 012263, 012279, 012280, 012407 (case screw), 012422 (screw for oscillating weight), 012668, 012670, 012724 (dial screw), 012736, 012746, 012750
Development division:Daini (Kameido, Tokyo)
Notes:The same as cal. 2206 but without day display (date only).
PDF guides: Technical guide for 2205A
Related movements: 2202 2206

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