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Seiko 8S21-6040
The Seiko 8S21-6040 watch movement is a thermocompensated quartz perpetual calendar movement with a rhodium-plated finish. It features an end of battery life indicator and has a battery life of 48 months. The movement is based on the ETA ETA 252.511 and offers functions such as analog display, quartz mechanism, perpetual calendar, and time zone display.
The Seiko 8S21-6040 features the following functions:
- Analog Display
- Perpetual Calendar
- Quartz Movement
- Time Zone Display
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
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Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
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Incabloc Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
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KIF Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
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Documents
Parts Listing
| Part Description | Reference # | Alternate | Buy |
|---|---|---|---|
| CENTER WHEEL, SS HT 1.51 | 206/822 | 9314/OME 1430 | Buy part |
| CIRCUIT | X/14340 | Buy part | |
| DATE CORRECTOR SETTING WHEEL | X/9932 | 9333/OME 1430 | Buy part |
| FOURTH WHEEL, SS HT 3.15 | 227/991 | 9324/OME 1430 | Buy part |
| NEGATIVE(-) BRIDLE INSULATOR | X/9923 (use X/11038) | X/9923 | Buy part |
| SETTING WHEEL | 450/1241 | 9217/OME 1430 | Buy part |
| STEM | 401/1379 | Buy part | |
| THIRD WHEEL | 210/1573 | 9208/OME 1430 | Buy part |
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