Hamilton

Day Date Auto

Reference Number :

H64645531

Series : Khaki Aviation

Retail: $995

(As of: 05/2025)

This watch is not for sale, this page is just for reference purposes only. If you would like to purchase this watch, please contact Hamilton. If you are interested in selling this watch to us, you can contact us here.

Quick TakeAlright, picture this: a watch that feels like it’s just itching for adventure, the Hamilton Khaki Aviation Day Date Auto. It’s got that classic pilot watch vibe with the clear, no-nonsense black dial, but then it throws in this super practical day-date display that's just fantastic for everyday wear. The 42mm size hits that sweet spot – substantial enough to feel like a proper tool watch, but not so big it’s clunky. And let’s talk about that H-40 movement; seriously, an 80-hour power reserve is a game-changer. You can kick it off Friday evening and it’s still purring come Monday morning. It’s a watch that whispers "ready for anything" with its rugged stainless steel case and robust sapphire crystal, but also feels incredibly comfortable and stylish on the wrist thanks to that warm, inviting cow leather strap. This isn't just a time teller; it's a trusty co-pilot for whatever life throws at you, all wrapped up in a cool, understated package.

DescriptionConstructed for robust performance, the Hamilton Khaki Aviation Day Date Auto, reference H64645531, incorporates a 42mm diameter stainless steel case, engineered to withstand operational demands. Its structural integrity is further enhanced by a sapphire crystal, which offers superior scratch resistance and clarity, along with an anti-reflection coating to minimize glare under varying light conditions. The timepiece maintains water resistance to 10 bar, equivalent to 100 meters or 328 feet, rendering it suitable for aquatic environments up to that depth. The open case back provides visual access to the intricate mechanics of the automatic movement. Complementing the case is a 20mm lug width, facilitating strap interchangeability. The watch features a black dial, providing a high-contrast backdrop for legibility. Its overall thickness measures 12.15mm, contributing to a balanced profile on the wrist.

Powering this instrument is the Hamilton caliber H-40, an automatic movement distinguished by its extended power reserve. This caliber is designed to provide an operational duration of up to 80 hours, significantly exceeding the typical market standard for automatic movements. This enhanced power reserve capability allows the watch to remain functional over an entire weekend without requiring manual winding or wear, preserving its timekeeping accuracy. The movement's design emphasizes reliability and consistent performance, characteristic of Hamilton's watchmaking principles. The watch is currently part of the active collection, indicating its ongoing availability and continued adherence to contemporary production standards. A cow leather strap, identified by reference H6006461111, secures the timepiece, utilizing an H-Buckle with a matching 20mm buckle width to ensure a secure and comfortable fit.

GenderMen

SignaturesHamilton

Country of OriginSwitzerland

Case Size42 mm

MovementAutomatic

CaliberH-40

FunctionsHours, Minutes, Seconds, Date, Day

Power Reserve80 Hours

Case MaterialsStainless Steel

Bezel MaterialsStainless Steel

Lug MaterialsStainless Steel

Dial ColorBlack