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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Lug width13 mm
Case diameter26 mm
Reference79178
FamilyLady-Datejust
MovementAutomatic 2235 C
Year1990s-2000s
Casegold
Crystalsapphire
Water resistance50

Spring bar

Spring bars for Rolex

The right category for this model · choose the 13 mm size

Standard spring bar · length 13 mm · Ø 1.8 mm double flange · industry standard, no brand part number

Rolex Lady-Datejust 26 79178 Yellow Gold — watch

What length do I need?

Measure your wrist with a tailor's tape or a piece of string, comfortably snug.

Wrist circumferenceLength (long side / short side)
15.0–16.4 cm120 / 70 mm
16.5–17.8 cm125 / 75 mm
17.9–19.0 cm130 / 80 mm
19.1–20.3 cm135 / 85 mm
20.4–21.6 cm140 / 85 mm
21.7–22.9 cm145 / 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.

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

Updated on · by Antonio Zichichi