Strap for Column-Wheel Chronograph

The Longines Heritage L2.750.4.96.0 features a lug width of 20 millimetres. This measurement is determined by calculating the distance from the inner side of one lug to the inner side of the opposite lug, excluding the end links. It is a classic standard in the heritage-sports segment that permits diverse pairings with artisanal and aftermarket straps.

The choice depends on intended use. For formal occasions, French or American alligator delivers elegance whilst maintaining sporting character. For daily wear and natural patina development, vegetable-tanned calf ages beautifully. For authentic military-sports aesthetic, cotton-nylon NATO fabric with steel deployante recreates vintage atmosphere. Fluorosilicone rubber is ideal for prolonged humid or marine environments.

The strap is replaced via the spring bars positioned at the case extremities. Using a dedicated spring bar tool, apply controlled pressure to the pin's end to release it. Once extracted, the strap slides away from the bars. Installation of the new strap follows the reverse process: align the new strap with the bars, reinsert and secure the pin. For inexperienced users, consulting a professional horologist is recommended to prevent case scratching.

Yes, the 20-millimetre lug width is standard in the quality aftermarket sector. MilanoStraps offers extensive artisanal strap options compatible with this width: alligator, calf, shell cordovan, NATO fabrics and specialised rubbers. Compatibility is guaranteed for any strap labelled '20mm' meeting standard constructive specifications.

Durability depends on material and usage patterns. Premium alligator straps maintain structural integrity for 8–12 years of daily wear, with refurbishment possible. Vegetable-tanned calf resists for 6–9 years with periodic maintenance, developing accelerated patina. Shell cordovan is the most durable, exceeding 15 years of continuous use. Cotton-nylon NATO fabrics have shorter lifespan, 3–5 years, but are economically replaceable. Regular maintenance—cleaning, drying, occasional conditioning—significantly extends longevity.