Hamilton

Pilot Pioneer Mechanical Chrono

Reference Number :

H76409530

Series : Khaki Aviation

Retail: $2,195

(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 TakeBuckle up and feel the direct connection with the Khaki Aviation Pilot Pioneer Mechanical Chrono. This isn't just a timepiece; it's a tactile experience, a nod to the golden age of aviation when pilots and their machines worked in perfect synchronicity. Each morning ritual of manually winding the H-51-Si caliber is a quiet moment of engagement, charging up its impressive 60-hour power reserve. The assertive click of the chronograph pushers isn't just functional; it’s an invitation to command your time, whether you're navigating daily tasks or timing a cross-country adventure. Gaze through the robust sapphire crystal, its anti-reflective coating ensuring clarity, onto a black dial that exudes vintage military charm. Underneath, the advanced silicon balance spring ensures this mechanical heart beats with unwavering precision, even when life throws a little turbulence your way. It’s a pure, distilled timing instrument, designed for the enthusiast who appreciates heritage, reliability, and the satisfying feel of well-engineered mechanics on their wrist.

DescriptionThe Hamilton Khaki Aviation Pilot Pioneer Mechanical Chronograph, designated by reference number H76409530, is constructed with a stainless steel case that possesses a diameter of 40mm and a total thickness of 14.35mm. Its architectural design incorporates a 22mm lug width, providing a standard interface for strap attachment. Protecting the black-colored dial is a sapphire crystal, a material chosen for its superior scratch-resistant properties, further enhanced with an anti-reflection coating to maximize readability across diverse ambient light scenarios. This timepiece from the Khaki Aviation collection is engineered to withstand water pressures up to 10 bar, which translates to a depth of 100 meters or 328 feet (145 psi), ensuring its integrity during surface water activities and heavy splashing. The case material offers durability and a classic aesthetic suitable for its aviation-inspired heritage.

At the core of this chronograph resides the H-51-Si mechanical movement, a manually wound caliber that underscores a traditional watchmaking approach. A key innovation within this movement is the integration of a silicon balance spring, a component that provides notable anti-magnetic characteristics and improved resistance to variations caused by extreme atmospheric conditions, thereby enhancing overall chronometric stability. The H-51-Si offers an extended power reserve of approximately 60 hours when fully wound. Chronograph functionality is managed through dedicated start/stop and reset pushers located on the case, allowing for precise measurement of elapsed time intervals displayed on the clearly arranged dial. Consistent with its vintage-inspired design philosophy focused on pilot interaction, this movement purposefully omits a self-winding rotor and a date display. Completing the watch is a cow leather strap (strap reference H6000001151) featuring an H-Buckle with a corresponding buckle width of 22mm.

GenderMen

SignaturesHamilton

Country of OriginSwitzerland

Case Size40 mm

MovementHandwound

CaliberH-51-Si

FunctionsChronograph, Hours, Minutes, Seconds

Power Reserve60 Hours

Case MaterialsStainless Steel

Bezel MaterialsStainless Steel

Lug MaterialsStainless Steel

Dial ColorBlack