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1665 vs 126600
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| Specification | ||
|---|---|---|
| Nickname | Double Red / Great White | SD43 |
| Production | 1967–1983 | 2017–present |
| Era | First Sea-Dweller | 43mm, Cyclops added |
| Status | discontinued | current |
| Case diameter | 40mm | 43mm |
| Case material | Stainless steel | Oystersteel |
| 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 | Triplock; helium escape valve |
| Caseback type | Screw-down solid, engraved | Screw-down solid |
| Water resistance | 610m | 1220m |
| Dial | Black | Black |
| Dial configuration | Double-red text (DRSD) early, then single-line 'Great White' | Red 'Sea-Dweller' text (50th-anniversary revival) |
| Hands | Mercedes hands | Maxi Mercedes hands |
| Lume | Tritium | Chromalight |
| Lume type | Tritium | Chromalight |
| 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 with Glidelock |
| Bracelet material | — | Oystersteel |
| Aliases | DRSD | — |
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