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Home Products Khaki Aviation Pilot Pioneer Mechanical Chrono

Khaki Aviation Pilot Pioneer Mechanical Chrono

by Hamilton Watch Company

SKU 1148437

Date Added 07/10/2026

# Available This product is out of stock

Original price $1,595.00

Price $1,250.00

Overview

With a distinct vintage military aviation design, the Khaki Pilot Pioneer Mechanical Chronograph brings back the form and function of the chronographs issued to British Royal Air Force pilots in the 1970s. Rugged and reliable, the 40mm watch is powered by our exclusive hand-wound H-51-Si movement.

  • Reference H76409530
  • Caliber H-51-Si
  • Collection Khaki Aviation
  • Movement Mechanical
  • Watch Function Chronograph
  • Case size 40mm
  • Thickness (mm) 14.35
  • Dial color Black
  • Case material Stainless steel
  • Crystal Sapphire
  • Lug to lug 50mm
  • Lug width 22mm
  • Power reserve 60 hour
  • Status Current collection
  • Water Resistance 10 bar (100m)/145 psi (328ft)
  • Anti Reflection Yes
  • Silicon Balance Spring Yes
  • Strap type Cow leather
  • Buckle type H-Buckle
  • Buckle width 22mm
  • H-51-Si

The H-51-Si is a mechanical chronograph movement featuring a state-of-the-art balance spring made from the anti-magnetic material silicon for enhanced resistance to extreme atmospheric conditions. With an extended 60-hour power reserve, this hand-wound caliber keeps and measures time via an iconic dial complete with start/stop and reset pushers. With no rotor and no date function, this interactive movement brings modern reliability and precision to signature, vintage-inspired design.

Comes with original box, papers, tag and warranty card. Has some light scratches, otherwise good condition.

Product Details

Weight (oz) 3.5

Source Previously owned

Additional Specs

About the Maker

Hamilton Watch Company
Hamilton Watch Company

Hamilton was founded in Lancaster, Pennsylvania in 1892, and began producing pocket watches. Since its founding, quality and accuracy have been at the heart of its vision, and these principles have made Hamilton the internationally renowned watch brand it is today.