Seiko 6R20 Movement Details
Seiko calibre 6R20 is an automatic (with hand winding) watch movement.
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Sub-brands: | Premier |
Power reserve: | 45 hours |
Accuracy: | +25/-15 seconds/day (Seiko "C" standard) |
Day / date? | Day + date |
GMT / world time? | No |
Chronograph? | No |
Hacking? | Yes |
Rate: | 28,800 bph |
Number of jewels: | 29 |
Lift angle: | 52º |
Size / diameter: | 27.4mm |
Height: | 6.15mm |
Notes: | Has a power reserve indicator. |
PDF guides: | Technical guide : 6R20A & 6R21A |
Related movements: | 6R15 6R21 |
Part Codes
Stem code: | 351200 (tap 10) |
Balance wheel code: | 310048 |
Mainspring code: | 201074 |
Screw codes: | 012067 (case screw), 012168, 012201, 012354, 012420, 012919 (ratchet wheel screw) |