Compare Studio
5626-7000 vs 44-9990
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| Specification | ||
|---|---|---|
| Nickname | 56KS | 44KS |
| Production | 1968–1975 | 1964–1968 |
| Era | 56KS — Suwa automatic | 44KS — Daini manual-wind |
| Status | discontinued | discontinued |
| Case diameter | 36mm | 36.5mm |
| Case material | Stainless steel | Stainless steel |
| Construction | — | Faceted case with sharp, flat-polished surfaces |
| Crystal | Acrylic | Acrylic |
| Crown | — | Push-pull crown at 3 |
| Caseback | — | Screw-down, carrying the Daini lightning-bolt mark |
| Dial | Silver | Silver |
| Dial text | — | KING SEIKO / CHRONOMETER on some executions |
| Hour markers | — | Applied faceted markers |
| Hands | — | Faceted dauphine |
| Movement | Automatic | Manual wind |
| Caliber | 5626A | 4420A |
| Manufacturer | Seiko (Suwa Seikosha) | Seiko (Daini Seikosha) |
| Winding | automatic | manual |
| Frequency | 28,800 vph | 18,000 vph |
| Jewels | 25 | 25 |
| Complications | Day-date, quickset | — |
Compare 5626-7000 with another generation