Strap for Conquest 29.5 Quartz Ceramic

The lug width of the Longines Conquest L3.257.4.56.7 is 15mm. It is measured from the inner point of one lug to the inner point of the opposite lug, passing through the lateral pins of the case. This dimension requires purpose-built straps to ensure correct fit and visual proportion.

The Conquest L3.257.4.56.7 accommodates various materials depending on context. An alligator strap in brown or black mounted on a deployante buckle delivers formality and durability (five years with regular wear). Vegetable-tanned calf offers natural patina and immediate comfort. A NATO strap in canvas or silk provides sporting versatility. The ceramic bezel benefits from neutral or contrasting tones according to dial colour.

The Conquest uses push-through pins that require a specialised tool (spring bar removal tool) to push the lateral pin out, freeing the strap. Proceed with care to avoid scratching the case. If inexperienced, entrust the operation to a certified watchmaker. Casati Milano offers strap-change service in the atelier by appointment.

Any strap with a 15mm lug width is compatible with this model. Milano Straps offers a dedicated collection of 15mm straps in leather, rubber and textile, customisable in colour, length and stitching thread. The Casati Milano atelier also creates bespoke straps, personally selecting premium leathers.

A natural leather strap (alligator, calf, shell cordovan) on a regularly worn watch maintains structural integrity for three to five years. Longevity depends on tanning method—vegetable tanning ages gracefully with patina development; chrome tanning slows this process. Sun exposure, perspiration and humidity accelerate wear. Periodic maintenance—gentle cleaning and conditioning—extends useful life.