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Hamilton · Khaki Aviation

Strap for Khaki Aviation X-Wind GMT Chrono Quartz Stainless Steel / Black / Rubber

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

Lug width

22mm
22 mm strapsAll Hamilton
Lug width22 mm
Case diameter46 mm
ReferenceH77912335
FamilyKhaki Aviation
MovementETA caliber G10.962 Hours, Minutes, Small Seconds, Additional 24 Hour Hand (fixed) | Date | Chronograph, Rattrapante
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

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

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Straps for the Khaki Aviation H77912335

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Khaki Aviation H77912335, seen from the bench

The Hamilton Khaki Aviation features the ETA G10.962 caliber with flyback chronograph functions, hours, minutes, small seconds, and a fixed 24-hour hand. The watch has a date window and 22mm lugs. The movement offers chronograph indication with a double-chronograph function for intermediate time measurements.

Frequently asked questions

What is the lug width of the Hamilton Khaki Aviation H77912335?

The Hamilton Khaki Aviation H77912335 features a 22mm lug width. This standard measurement across the Khaki Aviation collection ensures compatibility with a broad range of artisanal strap options available in the aftermarket.

Which strap do you recommend for the Hamilton Khaki Aviation H77912335?

Given its aviation heritage and 46mm case diameter, we recommend vegetable-tanned leather straps in brown or black, or a military-spec NATO strap in linen-cotton blend. For enhanced comfort during flight operations, FKM rubber is the technical choice.

How do I change the strap on this model?

The H77912335 uses standard 22mm spring bars. Employ a proper spring bar tool: position the tip under the bar, apply gentle inward pressure and slide the strap until disengagement. Repeat on the opposite lug. The operation takes seconds.

Can I fit an aftermarket 22mm strap on this Hamilton?

Yes, the H77912335 is fully compatible with any ISO-standard 22mm aftermarket strap. We recommend Italian leather, alligator hide, or military-grade cordura, all respecting the 22mm lug specification.

How long does a leather strap last on this watch?

A quality vegetable-tanned strap, with regular maintenance (protection from moisture and aggressive detergents), offers a lifespan of 3–5 years. Actual durability depends on frequency of use, sun exposure, and storage conditions. FKM rubber straps guarantee 5–7 years with minimal maintenance.

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