Seiko S501 Movement Details
Seiko calibre S501 is a digital watch movement. Production was in the 1980s.
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| Battery: | BR2325 / (Lithium) |
| Accuracy: | ±15 seconds/month |
| Day / date? | Day + date |
| Alarm? | Yes |
| Development division: | Suwa (Nagano Prefecture, Japan) |
| Notes: | Has a memo function. Referred to as a "wrist terminal", watches with this movement came with cables and software to transfer data to a computer. |
| PDF guides: | Battery replacement guide |