Hamilton Watch Khaki Aviation Pilot 46mm Auto H64715535. The Khaki Pilot gives the wearer the feel of an early American pilot with its classic aviator design. It features a large, easy to read dial, day and date function, and superluminova hands. The Khaki Pilot is an essential piece of form and function for any pilot. The model exists in 46 and 38mm to fit all the wrists.