Hamilton Khaki Aviation Pilot Pioneer Mechanical Chrono

The Hamilton Khaki Aviation Pilot Pioneer Mechanical Chrono, reference H76409530, has a 40 mm steel case water resistant to 100 metres. A sapphire crystal covers the black dial's chronograph displays. The case measures 14.35 mm thick and 50 mm from lug to lug, on a leather strap with 22 mm lugs and a pin buckle. Hand-wound calibre H-51-Si keeps a 60-hour power reserve with a silicon balance spring.