Strap for Seventies Chronograph Panorama Date Blue / Alligator - Folding

The lug width is 26mm, an uncommon dimension in contemporary watchmaking. This specific measurement is inherent to the cushion case geometry of this model and determines the compatible strap width. To verify, measure the distance between the inner edge of the left lug and the inner edge of the right lug using a digital calliper. Never confuse this measurement with the case width (40mm): these are independent constructive parameters.

Cognac-brown alligator represents the most legitimate aesthetic choice: its regular grain and natural colour complement the smoked dial in gradient without competing visually. Vegetable-tanned calf is the second option, particularly if you desire a material that develops patina over time. Dark grey NATO remains the most versatile solution for informal and sportive contexts, given the presence of the column-wheel chronograph with flyback function.

Strap replacement is performed using the spring bars positioned inside each lug. Using a dedicated spring bar tool, compress the small metal ring on the internal side of the bar: this releases the strap end from the lug seat. Repeat for both sides. Insert the new 26mm strap by aligning the hole with the spring bar pin and release the tool. The strap should enter without excessive force: if resistance occurs, verify that the width is indeed 26mm.

Only if the strap is specifically constructed for 26mm lug width. Many universal aftermarket straps are dimensioned for 20, 22 or 24mm, dimensions incompatible with this model. Always verify the 26mm specification before purchase. Straps offered by Milano Straps for this measurement are artisanally constructed and guarantee aesthetic coherence with the original watch geometry.

Durability depends on material quality, frequency of wear, and climatic conditions. High-quality alligator with vegetable tanning maintains elasticity and resistance for 5-8 years with daily wear, longer if worn occasionally. Natural calf is generally less durable (3-5 years in intensive use). The patina that develops is not deterioration but natural ageing. NATO and technical rubber have greater durability (8-12 years) but require periodic cleaning. To maximise longevity, avoid prolonged exposure to water and high humidity, especially on untreated tannic leathers.