Strap for Conquest 34 Stainless Steel / Green - Diamond / Bracelet

The lug width of the Longines Conquest L3.430.4.07.6 is 17 millimetres. This measurement is taken with a digital calliper, positioned perpendicularly between the two lug pins, excluding any case elements. Since 17mm is not a standard size in the universal strap market, it is essential to select straps specifically constructed for this dimension to avoid gaps or fitting incompatibilities during installation.

The optimal strap selection depends on intended wear conditions and aesthetic preference. For formal elegance, alligator in deep mahogany tones enhances the reflections of the brushed steel case. For durability and natural patina development over time, shell cordovan is ideal due to its natural plasticity and wear resistance. For daily versatility with minimal maintenance, tempered calf leather with vegetable tanning offers the best balance between aesthetics and functionality. Technical rubber straps remain the superior choice for sporting activities and humid climates.

Strap replacement involves removing the spring bars (pins) from the lugs. Use a dedicated spring bar removal tool to compress the elastic pin and extract it gently from its housing. Once the lugs are free from the old strap, insert the new strap by passing the compressed spring bar through the hole and allowing it to position naturally. Verify that the pin is fully seated in the grooves. If you lack the proper tools, it is advisable to entrust the operation to a professional to prevent case scratching.

Yes, you may use aftermarket straps compatible with the 17mm lug width specification. MilanoStraps offers artisanal straps specifically constructed for this dimension, guaranteeing geometric compatibility and build quality. Always select straps of certified quality (alligator, vegetable-tanned calf, shell cordovan) from reputable suppliers. A well-crafted aftermarket strap does not compromise your watch's value and allows you to diversify aesthetic pairings.

Leather strap longevity depends on material type, build quality, and daily wear intensity. A high-quality alligator or calf strap typically lasts 3–5 years with regular maintenance (gentle cleaning, natural air-drying, humidity protection). Shell cordovan, owing to its natural resilience, may last 7–10 years or longer, developing a prized patina over time. Technical rubber straps offer comparable longevity to leather, though they require less maintenance. Constant exposure to perspiration, moisture, and direct sunlight reduces any strap's service life.