Compare Studio
6309-7049 vs SRP777
Differences are highlighted. Rows where both references share a value are dimmed.
| Specification | ||
|---|---|---|
| Production | 1976–1988 | 2016–present |
| Era | Export cushion diver, alternate market code | Modern reissue (4R36) |
| Status | discontinued | current |
| Case diameter | 44mm | 44.3mm |
| Thickness | — | 14mm |
| Lug width | 22mm | 22mm |
| Case material | Stainless steel | Stainless steel |
| Construction | Cushion case, crown at 4 | Cushion case, crown at 4 |
| Bezel | Unidirectional 60-minute | Unidirectional 60-minute |
| Crystal | Hardlex | Hardlex |
| Crown | Screw-down crown at 4 | Screw-down crown at 4 |
| Water resistance | 150m | 200m |
| Dial | Black | Black |
| Lume | — | LumiBrite |
| Lume type | — | LumiBrite |
| Movement | Automatic | Automatic |
| Caliber | 6309A | 4R36 |
| Manufacturer | Seiko | Seiko |
| Winding | automatic | automatic |
| Power reserve | — | ~41 hours |
| Frequency | 21,600 vph | 21,600 vph |
| Jewels | 17 | 24 |
| Complications | Day-date; non-hacking, non-hand-winding | Day-date, hacking, hand-winding |
Compare 6309-7049 with another generation