| Specification | Details |
|---|---|
| Model / Reference | Rolex Day-Date 36 mm Ref. 18038 |
| Case Diameter | 36 mm |
| Case Material | 18k Yellow Gold |
| Bezel | Fluted 18k yellow gold |
| Crystal | Scratch-resistant sapphire |
| Movement | Automatic Rolex Caliber 3055 |
| Functions | Hours, Minutes, Seconds, Day (full at 12), Date (at 3) |
| Dial Color | Black (various black dial styles: index or Roman) |
| Hour Markers | Index or Roman (depends on specific watch) |
| Bracelet | Rolex President bracelet in 18k yellow gold |
| Clasp | Hidden Crownclasp (President) |
| Water Resistance | ~100 m / 10 ATM |
| Caseback | Solid screw-down |
| Production Years | ~1978–1988 |
| Bracelet Lug Width | ~20 mm |
| Crystal Magnifier | Cyclops lens over date |









