Hamilton Watch Khaki Aviation Pilot Pioneer Aluminum. Wearers of the Khaki Pilot Pioneer Aluminum will certainly travel light. Hamilton has drawn on its flying heritage to inspire the first of its timepieces ever to integrate aluminum, the material that propelled the aerospace sector to new heights with its use in planes, space shuttles and even rocket fuel. This versatile metal facilitates design that brings the magic of flight to the wearer's imagination and unrivalled comfort to their wrist. The range comprises four shades associated with outdoor action in the field, from a sultry sand color through to khaki green, and from bold black to the navy of pristine pilot uniforms.