Longines · HydroConquest

Strap for Hydroconquest Chronograph

Takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width22 mm
Case diameter41 mm
ReferenceL3.673.4.76.2 (aka: L36734762)
FamilyHydroConquest
MovementETA caliber 7750 Hours, Minutes, Small Seconds | Date, Day | Chronograph
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

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

Straps for the HydroConquest L3.673.4.76.2 (aka: L36734762)

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The HydroConquest L3.673.4.76.2 (aka: L36734762), seen from the bench

The HydroConquest is a Longines diving chronograph equipped with an ETA caliber 7750 movement. The model features functions for hours, minutes, small seconds, date, day of the week and chronograph. The reference L3.673.4.76.2 represents a sporty version of the collection dedicated to water sports.

Frequently asked questions

What is the lug width of the Longines HydroConquest L3.673.4.76.2?

The lug width (also known as ansa width) of the Longines HydroConquest L3.673.4.76.2 is 22 millimetres. This parameter is measured as the internal distance between the two lugs on the watch case. For proper strap fitting, ensure you use straps certified for 22mm lug width.

Which strap do you recommend for the Longines HydroConquest L3.673.4.76.2?

The best strap depends on intended use. For formal elegance, we recommend vegetable-tanned alligator in dark havana colour; for recreational diving, English veal treated with hydrophobic agent; for serious underwater operations, black FKM rubber; for daily versatility, NATO in heavy twill or canvas. Milanostraps offers personalised 22mm straps in every material option.

How do you change the strap on the Longines HydroConquest L3.673.4.76.2?

Position the watch on a soft pad and access the side pins with a spring bar tool. Gently push the pin inward to release it from the upper lug, remove the old strap, align the new strap's holes with the lugs, and reset the pin until you hear a click. The operation takes just a few minutes.

Is an aftermarket 22mm strap compatible with the Longines HydroConquest L3.673.4.76.2?

Yes, any strap certified for 22mm lug width is fully compatible with the L3.673.4.76.2. Milanostraps offers an extensive range of 22mm straps in alligator, veal, NATO, and rubber, customisable to individual preferences.

How long does a leather strap last on the Longines HydroConquest L3.673.4.76.2?

Durability depends on material and usage intensity. Vegetable-tanned alligator lasts 3–5 years with moderate daily wear; structured veal resists 2–4 years; rubber maintains elastomeric integrity for 5–7 years. Casati Milano guarantees its bespoke straps for 18 months.

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