Strap for Day-Date 36 Yellow Gold / Strap / White Roman

The lug width of the Rolex Day-Date 36 118138-0136 is 20 millimetres. This is the distance between the two lug pins that connect the case to the strap. The 20mm measurement represents the classic standard for men's formal watches, providing you with access to a wide selection of artisanal straps without compatibility constraints.

For the 118138-0136 in 18k yellow gold, we recommend a strap in alligator leather with vegetable tanning and natural grain texture. This choice dialogues with the finely controlled lustre of the gold case, whilst the leather develops a beautiful patina in parallel, creating visual harmony that matures over years. Alternatively, burgundy shell cordovan or French calf with hand-sewn silk stitching offer elegance and sartorial versatility.

To change the strap, you will need a spring bar tool or specialist watchmaker assistance. Position the watch securely, locate the two lateral lug pins beneath the case, and apply gentle vertical pressure to withdraw them from the attachment holes. Then insert the pins into your new strap following the reverse procedure. If you opt for a deployante clasp, this facilitates daily adjustment without requiring tools.

Yes, any strap with a 20mm lug width is compatible with the Day-Date 36 118138-0136. Artisanal straps produced by Casati Milano for this measurement guarantee construction quality equivalent to Rolex standards. We recommend verifying the clasp type: the 118138-0136 uses fixed pins (not flanged pins), so ensure your new strap supports this configuration.

Durability depends on the leather type and daily wear. An alligator strap with vegetable tanning typically lasts 4–6 years under regular use, whilst shell cordovan, being more robust, can last 6–8 years. Calf leather is more delicate, with an estimated lifespan of 3–4 years. With proper care – avoiding excessive moisture and storing the watch in a dry environment – you can extend the usable life considerably. Casati Milano offers an 18-month warranty against manufacturing defects.