Hamilton

Day Date Auto

Reference Number :

H64645131

Series : Khaki Aviation

Retail: $1,045

(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, let's talk about the Hamilton Khaki Aviation Day Date Auto – reference H64645131. This isn't just a watch; it's a solid, no-nonsense companion for the modern adventurer. That 42mm stainless steel case feels substantial on the wrist, a perfect balance of presence and wearability. And then there's that dial: a deep, inviting black, perfectly framed by the clear sapphire crystal with its anti-reflection coating – because who wants glare obscuring their view of perfection? But the real hero here, beyond its rugged good looks, is the H-40 movement. An 80-hour power reserve? That's just showing off, in the best possible way. Imagine taking it off for a long weekend and picking it up Monday morning, still ticking, ready to go. It’s got that cool open case back too, letting you peek at the mechanical heart beating within. This watch just exudes confidence, a dependable tool with a dash of classic aviation flair, perfect for someone who appreciates both form and function without any unnecessary fuss.

DescriptionThe Hamilton Khaki Aviation Day Date Auto, designated H64645131, is an automatic timepiece featuring a 42mm diameter stainless steel case. Its robust construction incorporates a 12.15mm thickness and a sapphire crystal with anti-reflection treatment, ensuring optimal legibility and scratch resistance. The black dial is complemented by a 20mm lug width, accommodating a stainless steel bracelet with a folding clasp, sized at 18mm at the buckle. This model's engineering allows for a water resistance rating of 10 bar (100 meters), equivalent to 145 psi (328 feet), suitable for various aquatic activities. The exhibition case back provides a view of the internal mechanism.

Powering this instrument is the Hamilton caliber H-40, an automatic movement distinguished by its extended power reserve. This proprietary movement boasts an impressive 80-hour operational autonomy, significantly surpassing typical industry standards. This extended power reserve grants the wearer the convenience of removing the watch on Friday and rediscovering it still operating on Monday, negating the need for immediate rewinding. The H64645131 is an active member of Hamilton's current collection, underscoring its contemporary relevance and availability. The careful selection of materials and the precise calibration of the H-40 movement ensure reliable performance and a durable aesthetic, making it a compelling choice for enthusiasts seeking both functionality and design integrity.

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