Longines · HydroConquest

Strap for Hydroconquest Quartz 25 Two Tone Diamond

Integrated attachment: measurements, the most common questions, and the way to a made-to-measure strap.

Lug width to be confirmed

On this Longines HydroConquest L3.147.3.97.7 the lug width doesn't convince me, and I don't want to give you a number I'm not sure about. Write to me on WhatsApp with the reference or a photo of the watch: I'll check it and tell you myself.

Case diameter25 mm
ReferenceL3.147.3.97.7 (aka: L31473977)
FamilyHydroConquest
MovementLongines caliber L250 Hours, Minutes, Seconds | Date
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Frequently asked questions

Which strap is recommended for the Longines HydroConquest L3.147.3.97.7?

For the L3.147.3.97.7, recommended straps include: alligator niloticus with fine grain for classic elegance, vegetable-tanned calf for sustainability and natural patina development, shell cordovan for durability and natural lustre, and FKM rubber for water use. Choice depends on intended usage and personal aesthetic preference.

How do I change the strap on the Longines HydroConquest L3.147.3.97.7?

Strap replacement is straightforward: position the watch on a soft surface, use a spring bar tool to apply pressure to the lateral pin springs, extract the pin from one side, remove the old strap, align the new strap holes, and reinsert the pin until the safety click is heard. No specialised tools beyond a spring bar tool are required.

How long does a leather strap last on the Longines HydroConquest L3.147.3.97.7?

Leather strap longevity depends on material quality and usage. Quality artisanal alligator or calf lasts 3–5 years under daily wear. Shell cordovan lasts longer due to its density. Regular maintenance—cleaning and conditioning with specialist creams—and rotation with alternative straps significantly extends useful life.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only

The atelier's website: casatimilano.com