Strap for Hydroconquest Automatic 39 Black

The lug width (attachment width) of the L3.694.4.53.6 is 19mm, a rare and specific size that requires dedicated straps. This measurement is taken from the centre of one pin to the centre of the other, perpendicular to the case.

Choice depends on use. For formal and daily wear, black alligator in vegetable tanning offers evolving patina and refinement. For proven longevity, shell cordovan is unbeatable. For authentic diving, FKM rubber guarantees waterproofness without maintenance.

Remove the watch from your wrist. Use a spring bar tool (small T-shaped instrument) to gently lift the horizontal metal pin, sliding it laterally. Remove the old strap and insert the new one, aligning the pins into the case lugs. Verify it sits symmetrically centred.

Yes, provided it has a 19mm lug width. Artisanal aftermarket straps often offer superior quality to OEM straps, with curated leathers, custom construction and personalisation options (initials, stitching, length).

A quality leather strap (alligator or shell cordovan) lasts 3–5 years with daily wear, depending on maintenance and perspiration. Shell cordovan resists longer. Protect from excessive humidity and direct salt water contact to extend lifespan. Annual conditioning (neutral oil) maintains elasticity and patina.