Hamilton

King Auto 40mm

Reference Number :

H64455533

Series : Khaki Field

Retail: $745

(As of: 06/2025)

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 TakeThere's an undeniable, no-nonsense charm to the Khaki Field King that speaks volumes without shouting. It's the kind of watch that feels like a reliable old friend from the moment you strap it on. The standout feature is that full day display arched over the date at twelve o'clock; it’s a bold, functional choice that gives the watch its distinct personality and crown-like guard. You can almost feel its military-inspired heritage in the clear, legible numerals and the sturdy steel case. But the real secret weapon is the H-40 movement beating inside. Having an 80-hour power reserve changes the game. It’s the freedom of knowing your watch is ready to go whenever you are, no matter how long the weekend was. It’s a perfect blend of rugged utility and mechanical sophistication, a piece that’s equally at home mapping out a trail or navigating a Monday morning meeting.

DescriptionThe timepiece, designated by the reference number H64455533, is constructed around a 40mm stainless steel case that possesses a measured thickness of 11.15mm. This housing ensures water resistance rated to 5 bar, a pressure equivalent to a depth of 50 meters or 164 feet, making it suitable for everyday exposure to moisture. A scratch-resistant sapphire crystal is utilized to protect the dial interface, ensuring maximum clarity and durability over time. The case architecture incorporates a 20mm lug width for strap attachment and features an open case back, which provides a direct view of the intricate internal mechanism at work. The dial is presented in black, with hour markers and hands treated with Super-LumiNova to provide clear legibility in conditions of diminished ambient light.

At the core of this watch is the Hamilton Caliber H-40 automatic movement, a self-winding mechanical system engineered for reliability and endurance. A key feature of the H-40 is its extended power reserve, which lasts up to 80 hours. This capability, nearly double the market standard, ensures the watch will continue to keep accurate time even if left unworn from a Friday evening through to a Monday morning. The watch is affixed to the wrist with a brown cow leather strap, identified by strap reference H6007041041. It fastens by means of a traditional pin buckle made from stainless steel, which has a width of 18mm to complement the strap dimensions.

GenderMen

SignaturesHamilton

Country of OriginSwitzerland

Case Size40 mm

MovementAutomatic

CaliberH-40

FunctionsHours, Minutes, Seconds, Date, Day

Power Reserve80 Hours

Case MaterialsStainless Steel

Bezel MaterialsStainless Steel

Lug MaterialsStainless Steel

Case BackSapphire Crystal