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1665 vs 126603
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| Specification | ||
|---|---|---|
| Nickname | Double Red / Great White | — |
| Production | 1967–1983 | 2019–present |
| Era | First Sea-Dweller | 43mm two-tone |
| Status | discontinued | current |
| Case diameter | 40mm | 43mm |
| Case material | Stainless steel | Yellow Rolesor (Oystersteel + 18k yellow gold) |
| Bezel | Unidirectional 60-minute | Unidirectional 60-minute Cerachrom |
| Bezel material | Aluminium insert | Ceramic (Cerachrom) |
| Crystal | Acrylic (no Cyclops) | Sapphire with Cyclops |
| Crown | Triplock; helium escape valve | — |
| Caseback type | Screw-down solid, engraved | — |
| Water resistance | 610m | 1220m |
| Dial | Black | Black or slate |
| Dial configuration | Double-red text (DRSD) early, then single-line 'Great White' | — |
| Hands | Mercedes hands | — |
| Lume | Tritium | — |
| Lume type | Tritium | — |
| Movement | Automatic | Automatic |
| Caliber | 1575 | 3235 |
| Manufacturer | Rolex | Rolex |
| Winding | automatic | automatic |
| Power reserve | — | ~70 hours |
| Functions | Hours, minutes, seconds, date | Hours, minutes, seconds, date |
| Bracelet | — | Oyster (Rolesor) with Glidelock |
| Aliases | DRSD | — |
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