Strap for Conquest 29.5 Quartz Stainless Steel

The lug width of the Longines Conquest L3.277.4.87.6 is 15mm. This measurement is critical for strap compatibility and is measured between the internal attachment points of the case. A strap with this lug width ensures harmonious proportions and wrist stability without lateral play. Do not confuse this measurement with the case diameter (29.50mm) or the total strap length.

For the Longines Conquest L3.277.4.87.6, alligator leather in vegetable tanning represents the ideal solution: its natural grain with rectangular scales creates sophisticated contrast with the polished steel case. Shell cordovan in vegetable tanning is excellent for those desiring a patina that evolves over time. For sport versatility, vegetable-tanned calf leather in rib texture offers superior construction durability. Your choice depends on use context and personal aesthetic preference.

The strap is changed using a standard strap removal tool (spring bar tool). Position the device in the small lateral grooves beneath the case, at the strap attachments, and rotate slightly to compress the internal spring. Once the first side is released, repeat on the second side. Insert the new strap by aligning the pins to the attachments and press until the spring clicks into position. If you prefer, our experts can perform the swap for you at the Casati Milano atelier.

Yes, absolutely. Any strap with a 15mm lug width is compatible with this model. Milano Straps offers artisanal straps realised in various materials (alligator, calf, shell cordovan) with the same construction quality as genuine Longines straps. Customisation in size, colour, initials and choice of stitching thread makes the aftermarket strap a superior option for those seeking uniqueness and precise adjustment to your wrist.

The durability of a leather strap depends on material quality, tanning method and conditions of use. A high-quality alligator or calf strap in vegetable tanning, such as those by Milano Straps, has an average durability of 3–5 years with daily wear, extendable to 7–10 years with periodic maintenance and rotation with other straps. Frequent exposure to humidity, chlorine or salt shortens this lifespan. All Milano Straps straps carry an 18-month guarantee against manufacturing defects.