Hamilton Khaki Aviation Takeoff Auto Chrono

About This Watch

The Hamilton Khaki Aviation Takeoff Auto Chrono is the flagship chronograph in Hamilton's aviation lineup, combining a robust 42mm case with the brand's H-31 automatic chronograph caliber and a distinctive tachymeter bezel. This is Hamilton at its most ambitious — a full-featured aviation chronograph on bracelet that competes with watches costing two to three times as much. The H-31 movement, based on the venerable Valjoux 7750, has been modified by Hamilton to deliver a 60-hour power reserve, exceeding the standard 42-hour reserve of the base caliber. The tri-compax dial layout positions the running seconds at 9, 30-minute counter at 12, and 12-hour counter at 6, creating the classic chronograph face that has defined the genre since the 1960s. The tachymeter scale on the fixed bezel allows speed calculations, while the chronograph pushers deliver satisfying tactile feedback with a precise, positive action. At 42mm the Takeoff is large but manageable, and the stainless steel bracelet with alternating brushed and polished links gives the watch a presence that suits both the cockpit and the boardroom. The 15mm thickness is typical for a 7750-based chronograph and keeps the center of gravity close to the wrist. At around $2,100, the Takeoff occupies the top of Hamilton's range and represents the most watch you can get from the brand — a genuine Swiss automatic chronograph with aviation heritage, sapphire crystal, and stainless steel bracelet that puts many watches twice its price to shame.