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16600 vs 1665
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| Specification | ||
|---|---|---|
| Nickname | — | Double Red / Great White |
| Production | 1988–2008 | 1967–1983 |
| Era | Modern 40mm | First Sea-Dweller |
| Status | discontinued | discontinued |
| Case diameter | 40mm | 40mm |
| Case material | Stainless steel | Stainless steel |
| Bezel | Unidirectional 60-minute | Unidirectional 60-minute |
| Bezel material | Aluminium insert | Aluminium insert |
| Crystal | Sapphire (no Cyclops) | Acrylic (no Cyclops) |
| Crown | Triplock; helium escape valve | Triplock; helium escape valve |
| Caseback type | — | Screw-down solid, engraved |
| Water resistance | 1220m | 610m |
| Dial | Black | Black |
| Dial configuration | — | Double-red text (DRSD) early, then single-line 'Great White' |
| Hands | Mercedes hands | Mercedes hands |
| Lume | Tritium then Super-LumiNova | Tritium |
| Lume type | — | Tritium |
| Movement | Automatic | Automatic |
| Caliber | 3135 | 1575 |
| Manufacturer | Rolex | Rolex |
| Winding | automatic | automatic |
| Functions | Hours, minutes, seconds, date | Hours, minutes, seconds, date |
| Bracelet | Oyster | — |
| Aliases | — | DRSD |
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