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Seiko 4M21 Movement Details
Seiko calibre 4M21 is a kinetic (formerly AGS) watch movement.
Find 4M21 movements, parts and watches on eBay.
| Sub-brands: | Laurel |
| Battery: | 3027.4MZ (replaces 3029.114 and 3029.116) (Rechargeable capacitor) · Find on eBay |
| Accuracy: | ±15 seconds/month |
| Day / date? | No |
| GMT / world time? | No |
| Chronograph? | No |
| Hacking? | Yes |
| Rate: | 32,768 Hz |
| Number of jewels: | 9 |
| Size / diameter: | 25.6mm |
| Height: | 2.7mm |
| Notes: | Has a power reserve indicator function. |
| PDF guides: | Technical guide : 4M21A |
Part Codes
| Stem code: | 351552 |
| Screw codes: | 012354, 022490 (screw for oscillating weight) |