Hamilton

Railroad Auto Chrono

Reference Number :

H40656131

Series : American Classic

Retail: $2,045

(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 TakeMore than just a timekeeper, the Railroad Auto Chrono is a cockpit for the wrist. The dial is not just a face; it is a dynamic instrument panel. Those concentric orange rings pull your eye toward the center, reminiscent of vintage railway timers yet feeling entirely contemporary, like a radar sweep. It has the soul of a historical tool watch, but its execution is pure modern muscle. Housed within the formidable 44mm steel frame is the H-21 automatic movement, an engineering powerhouse offering a hefty 60-hour power reserve. This is not a watch that sits quietly. It is for the individual who appreciates the intricate dance of gears and levers visible through the case back, the satisfying click of the chronograph pushers, and the undeniable presence of a machine built with purpose and precision. It connects a legacy of accuracy with a design that is anything but conventional.

DescriptionThe Hamilton American Classic Railroad Auto Chrono, reference H40656131, is constructed with a stainless steel case measuring 44mm in diameter and 15.3mm in thickness. It features a lug width of 22mm, accommodating the integrated stainless steel bracelet. The integrity of the case provides water resistance rated to 5 bar, which is equivalent to a depth of 50 meters or a pressure of 73 psi. Protecting the dial is a scratch-resistant sapphire crystal, which has been treated with an anti-reflection coating to ensure maximum legibility under various lighting conditions. An open case back, also fitted with sapphire crystal, allows for an unobstructed view of the internal mechanical movement. The accompanying bracelet, identified by reference H6054061021, is also fabricated from stainless steel and secures to the wrist by means of a folding clasp mechanism for enhanced security.

Powering this timepiece is the Hamilton Caliber H-21, a self-winding automatic chronograph movement. This advanced mechanism provides a substantial power reserve of 60 hours, a significant extension over standard chronograph calibers. A key decorative feature of the movement, visible through the exhibition case back, is the distinctive H-pattern design integrated onto the oscillating bridge. The primary functions offered by the caliber include a sophisticated chronograph for measuring elapsed time and a date display, typically located in an aperture on the dial. These complications are presented on a black dial, which serves as a high-contrast background for the timekeeping and chronograph indications. The dial architecture is precisely designed for clear data interpretation, integrating the sub-dials and date window into a cohesive and functional layout.

GenderMen

SignaturesHamilton

Country of OriginSwitzerland

Case Size44 mm

MovementAutomatic

CaliberH-21

FunctionsChronograph, Hours, Minutes, Seconds, Date

Power Reserve60 Hours

Case MaterialsStainless Steel

Bezel MaterialsStainless Steel

Lug MaterialsStainless Steel

Case BackSapphire Crystal