Seiko 8M25 Movement Details
Seiko caliber 8M25 is an analog quartz watch movement. Production was in the 1980s.
| Battery: | SR920W / 370 (Silver oxide) |
| Accuracy: | ±15 seconds/month |
| Day / date? | No |
| GMT / world time? | No |
| Chronograph? | Yes |
| Rate: | 32,768 Hz |
| Number of jewels: | 4 |
| Size / diameter: | 25.5mm |
| Height: | 2.6mm |
| Development division: | Daini (Kameido, Tokyo, Japan) |
| Notes: | Has an alarm and countdown timer function. This movement only has two hands, with the minute hand being used as the counter for the chronograph and timer functions. |
| PDF guides: |
Battery replacement guide
: 8M25A & 8M25B
Technical guide |
| Related movements: | 8M26 8M37 |
Part Codes
| Stem code: | 351148 |
| Screw codes: | 012066 |