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.
In-Depth Review
# Hamilton Khaki Aviation Takeoff Auto Chrono
Hamilton's Khaki Aviation collection draws its DNA from the brand's storied partnership with military and civilian aviation dating back to 1917. The Takeoff Auto Chrono carries this legacy forward with understated competence, housed in a straightforward 42mm stainless steel case that prioritizes function over flash. The black dial, fixed tachymeter bezel, and integrated chronograph deliver genuine utility without unnecessary complications. What distinguishes this piece is its in-house H-31 caliber, a robust automatic movement offering a respectable 60-hour power reserve and running at 28,800 vph. This is a watch designed by engineers, not marketing committees—honest, capable, and built to last.
The Takeoff appeals to a specific collector: the professional who values heritage and reliability over brand prestige. Pilots, engineers, and serious watch enthusiasts recognize the Khaki line as credible tool watches offering Swiss manufacturing at accessible prices. The 100-meter water resistance and durable stainless steel construction suit both office desk and field conditions, while the chronograph function remains genuinely useful rather than decorative. The included bracelet balances comfort with sportiness, though the 15mm thickness makes this watch feel substantial on the wrist without becoming unwieldy.
At current market prices around $1,595—roughly $500 below MSRP—the Takeoff competes favorably against mid-range chronographs. The Seiko Prospex Speedtimer offers quartz affordability but sacrifices in-house movement prestige, while the TAG Heuer Aquaracer Chronograph demands significantly higher investment. For buyers seeking genuine Swiss watchmaking with aviation credentials and a dependable in-house movement, Hamilton's offering represents genuine value without compromise.
Specifications
Movement
| Movement Type | Automatic |
|---|---|
| Caliber | H-31 |
| Power Reserve | 60 hours |
| Frequency | 28,800 vph |
| Jewels | 27 |
Case
| Case Diameter | 42.0mm |
|---|---|
| Case Thickness | 15.0mm |
| Case Material | Stainless Steel |
| Crystal | Sapphire |
| Bezel | Fixed, tachymeter |
| Dial Color | Black |
| Lug Width | 22mm |
| Lug-to-Lug | 51.0mm |
Features
| Water Resistance | 100m / 328ft |
|---|---|
| Bracelet/Strap | Stainless steel bracelet |
| Clasp | Folding clasp with push buttons |
| Weight | 170g |
| Complications |