Seiko 4205 Movement Details
Seiko caliber 4205 is an automatic (with hand winding) watch movement. Production started around 1976.
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Power reserve: | 40 hours |
Accuracy: | +55/-35 seconds/day |
Day / date? | Date only |
GMT / world time? | No |
Chronograph? | No |
Rate: | 21,600 bph |
Number of jewels: | 17 |
Lift angle: | 49º in 4205A & 4205B, 52º in 4205C |
Size / diameter: | 17.2mm |
Height: | 5.6mm |
Development division: | Daini (Kameido, Tokyo, Japan) |
Notes: | Used in ladies diving watches. The same as cal. 4206 but without day display (date only). |
PDF guides: |
Technical guide
: 4205A
Technical guide : 4205B, 4206B, 4207B, 4208B, 4225A & 4227A Technical guide : 4205C, 4206C, 4207C, 4208C, 4225B & 4227B |
Related movements: | 4206 4207 4208 |
Part Codes
Stem code: | 351420 |
Balance wheel code: | 310421 |
Mainspring code: | 201420 |
Videos
Related Articles
- Seiko 4205-014B [thewatchspotblog.com]
- Project: 1982 Seiko 4205-015T Part 1 of 2 [fixingwatches.com]
- Seiko 4205(A) Stripdown [watchrepairtalk.com]
- Seiko 4205 Rebuild [watchrepairtalk.com]