Compare Studio
6306-7001 vs SRPE05
Differences are highlighted. Rows where both references share a value are dimmed.
| Specification | ||
|---|---|---|
| Nickname | — | King Turtle |
| Production | 1976–1982 | 2020–present |
| Era | JDM cushion diver | Sapphire and ceramic Turtle |
| Status | discontinued | current |
| Case diameter | 44mm | 45mm |
| Lug width | 22mm | — |
| Case material | Stainless steel | Stainless steel |
| Construction | Cushion case, crown at 4 | — |
| Bezel | Unidirectional 60-minute | Unidirectional 60-minute, ceramic insert |
| Bezel material | — | Ceramic |
| Crystal | Hardlex | Sapphire |
| Crown | Screw-down crown at 4 | Screw-down crown at 4 |
| Caseback | Screw-down with a tsunami (wave) medallion | — |
| Water resistance | 150m | 200m |
| Dial | Black | Black with waffle texture |
| Dial text | Japanese-market dial | — |
| Hands | Baton hour and minute, lollipop seconds | — |
| Lume | Tritium | LumiBrite |
| Lume type | Tritium | LumiBrite |
| Movement | Automatic | Automatic |
| Caliber | 6306A | 4R36 |
| Manufacturer | Seiko (Suwa Seikosha) | Seiko |
| Winding | automatic | automatic |
| Frequency | 21,600 vph | — |
| Jewels | 21 | — |
| Complications | Day-date with a Kanji/English day wheel, hacking seconds | Day-date, hacking, hand-winding |