Strap for Conquest 34 Stainless Steel - Pink Gold / Green / Rubber

The lug width of the Longines Conquest L3.430.5.02.9 is 17mm. This is a non-standard measurement in the watch market, as the most common standards are 16mm, 18mm and 20mm. Measurement should be taken across the metal lugs between the two spring bar holes on the case. This specification requires a more careful search for a compatible strap, whether from standard collections or through bespoke creations.

The ideal strap depends on your intended use: to enhance the elegant two-tone case (rose gold and stainless steel), a dark brown or black alligator with a rose gold deployante is the most sophisticated choice. For a more versatile approach, patinated Annonay calf leather in dark tones pairs beautifully with rose gold and develops a natural patina over time. To maintain the sporty character, brown shell cordovan or a fabric nato strap offer a more casual aesthetic, ideal for daily wear.

The strap is changed by removing the two spring bars that secure it to the case. Using a dedicated spring bar tool or a small flathead screwdriver, gently apply pressure to one of the bars until the internal spring retracts, freeing the strap. Repeat on the other side. To install the new strap (always 17mm), insert the bar into the case lug and push until the spring clicks into position. If you lack experience, we recommend having a jeweller or authorised Longines service centre perform this operation.

Yes, any strap with a 17mm lug width is compatible. Aftermarket straps (made by brands other than Longines) are perfectly compatible, provided they have the correct spring bars for attachment. Many artisanal strap makers create bespoke 17mm straps with choice of premium leathers (alligator, calf, shell cordovan) and custom finishes. Compatibility is guaranteed by the standardisation of spring bars: the only critical parameter is the lug width (17mm, as stated).

The lifespan of a leather strap depends on intensity of use, type of leather and care. A high-quality artisanal alligator or calf strap, when used daily, typically lasts 3-5 years. If properly stored, away from moisture and direct heat, and regularly maintained (gentle cleaning with soft cloths, occasional leather conditioning cream), it can last beyond 6 years. Shell cordovan is even more durable and may last 7-10 years. The underside (suede) and spring bars are the critical wear points: when the suede becomes excessively worn or the bars degrade, the strap can be refurbished by a craftsman.