Specifications
- Reference
- 279161
- Family
- Lady-Datejust
- Category
- Classic
- Status
- Current
- Case material
- Steel and rose gold
- Case diameter
- 28 mm
- Case thickness
- 10.5 mm Third-party
- Lug-to-lug
- 34.5 mm Third-party
- Lug width
- —
- Water resistance
- 100 m
- Bezel
- Domed
- Certifications
- Superlative Chronometer
- Calibre
- 2236 Official
- Power reserve
- about 55 h
Official product page · retrieved October 15, 2026
Does it fit your wrist?
Enter your wrist circumference. The watch appears to scale on the flat top of the wrist.
Looks small
Lug-to-lug 34.5 mm on a flat top of 54.1 mm: 64 % of the width.
Lug-to-lug is under 75% of the flat top. Fine to wear, but the watch may look small on you.
Measurements and sources
Brands rarely publish thickness, lug width and lug-to-lug together. Each observation below is kept separate, with who gave it.
Case thickness
| Value | Type | Source | Date |
|---|---|---|---|
| 10.5 mm | Third-party | Bob's Watches Retailer size chart; the page says dimensions were taken with digital calipers on watches in its inventory and from other reputable sources. Figure listed for ref. 279160, the version of this case in another metal. | October 14, 2026 |
Lug-to-lug
| Value | Type | Source | Date |
|---|---|---|---|
| 34.5 mm | Third-party | Bob's Watches Retailer size chart; the page says dimensions were taken with digital calipers on watches in its inventory and from other reputable sources. Figure listed for ref. 279160, the version of this case in another metal. | October 14, 2026 |
Lug width
Lug width is the gap between the lugs, where the strap fits. It is not lug-to-lug.
No source gave this figure yet.
Calibre source
Official Rolex · retrieved October 15, 2026
Other versions in the same case
These references differ only by dial, bracelet or bezel colour. The brand gives them the same case dimensions, so the figures on this page apply to them too.
Other Lady-Datejust references
| Watch | Ø | Thickness | Lug-to-lug | Calibre |
|---|---|---|---|---|
| Lady-Datejust (Everose Rolesor) 279171 | 28 mm | 10.5 mm | 34.5 mm | 2236 |
| Lady-Datejust (18 ct Everose gold) 279175 | 28 mm | 10.5 mm | 34.5 mm | 2236 |
| Lady-Datejust (18 ct yellow gold) 279178 | 28 mm | 10.5 mm | 34.5 mm | 2236 |
| Lady-Datejust (Oystersteel) 279160 | 28 mm | 10.5 mm | 34.5 mm | 2236 |
| Lady-Datejust (White Rolesor) 279174 | 28 mm | 10.5 mm | 34.5 mm | 2236 |
| Lady-Datejust (Yellow Rolesor) 279163 | 28 mm | 10.5 mm | 34.5 mm | 2236 |
| Lady-Datejust (Yellow Rolesor) 279173 | 28 mm | 10.5 mm | 34.5 mm | 2236 |
Other Rolex models
| Watch | Ø | Thickness | Lug-to-lug | Calibre |
|---|---|---|---|---|
| Oyster Perpetual 28 (18 ct Everose gold) 276205 | 28 mm | — | — | 2232 |
| Oyster Perpetual 28 (18 ct yellow gold) 276208 | 28 mm | — | — | 2232 |
| Oyster Perpetual 28 (Oystersteel) 276200 | 28 mm | — | — | 2232 |
| Datejust 31 (Everose Rolesor, fluted bezel) 278271 | 31 mm | — | — | 2236 |
| Datejust 31 (Everose Rolesor) 278241 | 31 mm | — | — | 2236 |
| Datejust 31 (Oystersteel) 278240 | 31 mm | — | — | 2236 |