Rolex · Lady-Datejust
Strap for Rolex Lady-Datejust 79178
The Rolex Lady-Datejust 26 79178 Yellow Gold takes 13 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
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- 30-day returns
- 12-month warranty on manufacturing defects
- Hand-stitched in Milan
Lug width

What length do I need?
Measure your wrist with a tailor's tape or a piece of string, comfortably snug.
| Wrist circumference | Length (long side / short side) |
|---|---|
| 15.0–16.4 cm | 120 / 70 mm |
| 16.5–17.8 cm | 125 / 75 mm |
| 17.9–19.0 cm | 130 / 80 mm |
| 19.1–20.3 cm | 135 / 85 mm |
| 20.4–21.6 cm | 140 / 85 mm |
| 21.7–22.9 cm | 145 / 90 mm |
The ready-to-wear strap is 115 × 75 mm. For a smaller or larger wrist I make it in the right length: order your length.
What I'm asked about the Rolex Lady-Datejust 79178
What strap size does the Rolex Lady-Datejust 79178 take?
The Rolex Lady-Datejust 79178 needs 13 mm between the lugs. It's the size I've been fitting on it for years.
Can the strap on the Rolex Lady-Datejust 79178 be changed?
Yes, and easily: the lugs are drilled, so the spring bar is pushed out from the outside with a thin pin, without opening anything. If you prefer, I do it in the workshop.
Can I put a leather strap on the Rolex Lady-Datejust 79178?
Yes, in 13 mm leather. On a 26 mm case a calf strap works every day; if you want something more, alligator.
Which strap do you recommend for the Rolex Lady-Datejust 79178?
A 13 mm calf strap, for every day. I don't keep this size ready in the catalogue: I make it to measure. If you'd rather have something built on your wrist, the Casati atelier.
More Lady-Datejust
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- Lady-Datejust 26 Rhodium Jubilee13 mm
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- Lady-Datejust 26 Rolesor Everose Jubilee Silver Diamond13 mm
- Lady-Datejust 26 Rolesor Everose Pink13 mm
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More Rolex in 13 mm
- Rolex Oyster Perpetual 26 176200Oyster Perpetual 26
- Oyster Perpetual 26 Pink ExplorerOyster Perpetual 26
- Oyster Perpetual 26 White ExplorerOyster Perpetual 26
- Oyster Perpetual 26 Olive GreenOyster Perpetual 26
- Oyster Perpetual 26 SilverOyster Perpetual 26
- Oyster Perpetual 26 Red GrapeOyster Perpetual 26
For changing the strap
The next step
The right strap isn't chosen. It is built, together.
From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only
Bespoke straps for Rolex, in the atelier or by video call: casatimilano.com
