Seiko 9920 Movement Details
Seiko caliber 9920 is an analog quartz watch movement. Production started around 1980.
| Battery: | SR927SW / 395 (Silver oxide) |
| Accuracy: | ±20 seconds/year |
| Day / date? | No |
| GMT / world time? | No |
| Chronograph? | No |
| Hacking? | Yes |
| Rate: | 32,768 Hz |
| Size / diameter: | 25.0mm |
| Height: | 3.2mm |
| Development division: | Suwa (Nagano Prefecture, Japan) |
| Notes: | Twin quartz for greater accuracy. |
| Related movements: | 9921 9923 |