Seiko H558 Movement Details
Seiko caliber H558 is an analog + digital ("ana-digi") watch movement. Production started around 1982 and production finished in 1990.
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| Battery: | SR927W / 395 (Silver oxide) |
| Accuracy: | ±10 seconds/month |
| Day / date? | Day + date |
| GMT / world time? | Yes |
| Chronograph? | Yes |
| Alarm? | Yes |
| Rate: | 32,768 Hz |
| Number of jewels: | 3 |
| Size / diameter: | 28.0mm |
| Height: | 2.9mm |
| Development division: | Suwa (Nagano Prefecture, Japan) |
| Notes: | Has an alarm and a battery life indicator function where the digits in the display start flashing when the battery is running low. |
| PDF guides: | Technical guide : H558A |
| Related movements: | H556 H557 H851 |
Part Codes
| Stem code: | 372655 (movement side), 373640 (crown side) |
Videos
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- H558 Arnie Restoration [thewatchsite.com]