Strap for Conquest Heritage Power Reserve 38 Stainless Steel / Silver

The lug width of the Longines Conquest Heritage L1.648.4.78.2 is exactly 19 millimetres. This measurement represents the internal space between the two lugs of the case and is the fundamental parameter for selecting a compatible strap. To verify correct measurement, use a digital calliper, positioning the tip inside the lugs at the deepest point.

The best strap depends on intended use. For formal elegance, a cognac brown alligator enhances the proportion of the 38mm case without weighing down the wrist. For daily wear, vegetable-tanned calf leather offers robustness and develops a natural patina that perfectly complements the case's brushed steel. For sports contexts, a NATO strap in woven nylon maintains the model's original sports character. All 19mm straps are compatible with the lugs.

Strap change is accomplished by extracting the spring bars that connect the strap to the case lugs. Use a Spring Bar Tool to gently push the bar inward: the strap will detach easily. Position the new strap, aligning the two internal holes with the spring bars, then push until you hear a click. The operation takes a few minutes and requires no professional tools.

Yes, any strap with a lug width of 19 millimetres is perfectly compatible with the Longines Conquest Heritage L1.648.4.78.2. Aftermarket straps offer greater versatility than the original strap, allowing you to change the look according to the occasion. It is important to verify that the strap has adequate length for your wrist (typically 17-19 centimetres) and that the fixing pins are standard diameter (typically 1.80mm).

The lifespan of a leather strap varies depending on material and use. Quality alligator lasts 3-5 years with minimal maintenance (monthly cleaning, protection from excessive moisture). Vegetable-tanned calf resists 2-4 years depending on exposure to sweat and humidity. Shell cordovan, being naturally water-resistant, can last up to 6-7 years. Maintenance consists of periodic cleaning with a soft dry cloth and occasional application of straps-specific balms.