Strap for HydroConquest 44 Quartz Stainless steel / Black / Bracelet

The Longines HydroConquest L3.840.4.56.6 features a lug width of 22mm. This is measured as the distance between the case lugs. Any strap compatible with this width will fit perfectly without lateral play or excessive movement.

For a diving instrument like the HydroConquest, we recommend three primary options: vegetable-tanned alligator for elegance and versatility; FKM rubber for practicality and moisture resistance; premium NATO in regenerated fibres for casual styling and rapid drying. Your choice depends on intended use and wearing context.

To change the strap, you will need a spring bar tool. Insert the flat end under the lug pin, lift gently to release the internal spring, extract the pin and repeat on the other side. Mount the new strap by reversing the procedure. If you lack experience, entrust the operation to a qualified service.

Yes, any strap with a 22mm lug width is compatible. Milano Straps offers handcrafted straps in fine leather, natural fibres and technical rubber, all tested on diving watches. Always verify the exact width and ensure the attachment uses standard pins.

An alligator or calf strap in vegetable tanning, with regular maintenance, typically lasts 5-8 years before replacement is needed. Prolonged exposure to saltwater accelerates degradation. We recommend alternating with a rubber strap during summer or frequent water contact periods.