Strap for Daytona White Gold Diamond Ruby Strap

The Daytona 1165994ru-0001 requires a strap with an exact lug width of 20 millimetres. This measurement refers to the internal distance between the two pins (lugs) of the Oyster case. It is critical to verify this dimension before purchase, as earlier Daytona models with Zenith movements could require 19 millimetres, rendering the strap incompatible. Casati Milano personally measures your watch to ensure perfect fit.

For a white gold Daytona, alligator leather with fine grain remains the technically superior choice: the natural reptile texture dialogues optically with white gold, and its structural rigidity supports a 40-millimetre case without deformation. Black alligator offers formal restraint, whilst havana (deep brown-reddish) amplifies the gold's warmth. Excellent alternatives include shell cordovan, which ages rapidly into burgundy patina, and vegetable-tanned calf, which develops a honey-brown patina particularly elegant with gold.

Strap replacement requires a spring bar tool, a small metal instrument with two flat tips. Position the watch on a soft surface (a leather cloth prevents scratches), locate the retaining pins at the case extremities, and using the spring bar tool, gently compress the small latch beneath the pin to release the lug. Repeat on the other side. Once the old strap is removed, insert the new one by aligning the holes to the case lugs and press until the spring clicks. The operation takes three minutes if executed with precision. If you prefer to avoid risk, Casati Milano offers strap-change service with spring tension verification.

Yes. Certified aftermarket straps for 20-millimetre lug width include Hermès alligator, shell cordovan from specialised French tanneries, and vegetable-tanned calf from European ateliers. The quality differential lies in raw skin selection (skin grade), tanning method (vegetable, alum-salt, or chromium), and strap construction with internal channel for the pin. Casati Milano manufactures bespoke straps with curves personalised to your Daytona's case, guaranteeing perfect compatibility and 18 months warranty against manufacturing defects.

Longevity depends on leather quality and usage. Hermès-grade alligator lasts 5–7 years with weekly rotation (seven days of rest per week preserves shape memory). Shell cordovan, more delicate, lasts 3–4 years. Vegetable-tanned calf, though elegant, requires greater maintenance and lasts 4–5 years. If you wear the Daytona daily without rotation, lifespan reduces by 30 per cent. Replacement occurs when leather begins to chip at the lug or pins generate visible wear. Investment in a €400–600 strap amortised over five years equals less than €10 per month.