Seiko 603 Movement Details
Seiko calibre 603 is an automatic watch movement. Production started around 1960.
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| Sub-brands: | Seikomatic, Silverwave |
| Day / date? | No |
| GMT / world time? | No |
| Chronograph? | No |
| Hacking? | No |
| Rate: | 18,000 bph |
| Number of jewels: | 17, 20, 21 or 30 |
| Size / diameter: | 27.6mm |
| Height: | 4.8mm |
| Notes: | Effectively the same as cal. 6201. Replaced by cal. 830. |
| Related movements: | 3140 6201 830 |
Part Codes
| Stem code: | 351610, 351611, 354610, 354611, 354613, 357610 |