Hamilton

Intra-Matic Auto Chrono

Reference Number :

H38429730

Series : American Classic

Retail: $2,245

(As of: 07/2025)

This watch is not for sale, this page is just for reference purposes only. If you would like to purchase this watch, please contact Hamilton. If you are interested in selling this watch to us, you can contact us here.

Quick TakeForget automatic winding for a moment and get back to the fundamentals of what makes a watch tick. The Intra-Matic Chronograph H isn't just a timekeeper; it's a conversation piece and a daily ritual. That satisfying feeling of winding the H-51 movement each morning connects you directly to the 60 hours of power humming within its stainless steel shell. It’s a deliberate, tactile experience. On the wrist, its 40mm case wears like a dream, a modern interpretation of a mid-century classic. The high-contrast dial isn't just for looks—it’s a legible command center for the chronograph, ready to time anything from a road trip leg using the tachymeter to a perfectly steeped cup of tea. It’s for the purist who appreciates the mechanical soul of a watch, the person who doesn’t just wear a timepiece but engages with it. This is pure, unadulterated watchmaking joy, strapped to your wrist with a supple leather band.

DescriptionThe Hamilton American Classic Intra-Matic Chronograph H, designated by reference number H38429730, is a timepiece constructed from stainless steel. Its case measures a contemporary 40mm in diameter, with a total thickness of 14.35mm from the caseback to the crystal's apex. Engineered for durability, the case assembly provides water resistance up to 10 bar, a pressure rating equivalent to 100 meters or 145 psi, making it suitable for surface water activities. A scratch-resistant sapphire crystal serves as the protective window for the dial and is treated with an anti-reflection coating to mitigate glare and enhance legibility. The dial is executed in black, featuring two contrasting white subdials, and is encircled by a fixed tachymeter scale for calculating speed over a known distance. For optimal viewing in diminished ambient light, the hands and applied hour markers are coated with Super-LumiNova.

Powering the watch is the Hamilton Caliber H-51, a dedicated mechanical movement that requires manual winding. This design choice appeals to horological traditionalists and provides a direct interaction with the watch's mainspring. When fully wound, the caliber furnishes an extended power reserve of 60 hours. Its chronograph function is actuated by a pair of pushers flanking the winding crown, allowing for precise measurement of elapsed time intervals. The watch connects to the wrist with a black cow leather strap (strap reference H6003841151) that has a standard lug width of 20mm. It fastens securely with a polished stainless steel pin buckle, which is dimensioned for an 18mm strap width at the point of closure.

GenderMen

SignaturesHamilton

Country of OriginSwitzerland

Case Size40 mm

MovementAutomatic

CaliberH-51

FunctionsChronograph, Hours, Minutes, Seconds, Date

Power Reserve60 Hours

Case MaterialsStainless Steel

Bezel MaterialsStainless Steel

Lug MaterialsStainless Steel

CrownScrew Down