Strap for Conquest 29.5 Quartz Ceramic

The lug width of the Longines Conquest L3.257.4.16.6 is 15mm. This measurement defines the internal distance between the case lugs and determines strap compatibility. It is a specific, non-standard width that requires careful selection to ensure a perfectly fitted strap without lateral play.

For this compact model, we recommend alligator with vegetable tanning (cognac, grey, or black), which creates sophisticated aesthetic contrast with the steel-ceramic case. Alternatively, grained calf leather for daily wear, or shell cordovan for formal occasions. The choice should respect the watch's reduced proportions without excessive ornamentation.

The strap is changed by working the lateral lugs of the case. With the watch facing towards you, locate the small lever or pin securing the lug. Using a dedicated change tool, slide the horizontal bar to unlock the strap. Remove the old strap and insert the new one, ensuring it is perfectly centred before reclosing the bar.

Yes, it is compatible with any bespoke strap featuring a 15mm lug width. We recommend verifying the curvature fit between the strap and case shape. Milanostraps offers custom-made straps with personalisation options including thread colour, initials, and leather type of your choice.

A quality leather strap (alligator, calf, shell cordovan) typically lasts 3–5 years with daily wear, developing a characteristic patina that enhances its aesthetic value over time. Durability depends on tanning method, use (water exposure, humidity), and maintenance. Bespoke 15mm straps include an 18-month warranty against manufacturing defects.