Hamilton

Railroad Auto Chrono

Reference Number :

H40656731

Series : American Classic

Retail: $2,095

(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 TakeThis is not just a timepiece; it is a locomotive for your wrist. The Hamilton Railroad Auto Chrono is a masterful blend of American industrial heritage and modern horological muscle. The dial, with its contrasting orange accents against the stark black face, feels like a control panel from a classic streamliner, precise and ready for action. Those sub-dials are not just for show; they are powered by the formidable H-21 automatic movement, a workhorse with a 60-hour power reserve that just keeps chugging along. The 44mm steel case has a commanding presence, yet the supple calf leather strap with its matching orange stitch keeps it grounded in classic style. Flip it over, and the open case back reveals the beating heart of this machine, a constant reminder of the complex engineering that tracks every passing moment with unwavering reliability. It is a watch for the person who appreciates history but lives life in the fast lane.

DescriptionThe Hamilton American Classic Railroad Auto Chrono, reference H40656731, is constructed with a 44mm stainless steel case, which possesses a notable thickness of 15.3mm. This robust housing is engineered for a water resistance of 5 bar, a rating equivalent to a depth of 50 meters or a pressure of 73 psi. The design incorporates a 22mm lug width for strap integration. A scratch-resistant sapphire crystal serves as the protective layer over the dial; this crystal features an anti-reflection coating to mitigate glare and enhance readability. An exhibition-style open case back is also featured, offering a direct view of the intricate mechanical workings within the timepiece. The overall architecture is designed for durability and functional clarity in everyday conditions.

At the heart of this chronograph is the Hamilton Caliber H-21 automatic movement. This self-winding mechanism is notable for its extended power reserve of 60 hours, a significant increase over standard movements that ensures continued operation when not worn. The movement's functionality includes chronograph time measurement and a date complication, both displayed on the black dial. A distinguishing visual element of the Caliber H-21 is the 'H' pattern design applied to the oscillating bridge, visible through the open case back. The watch is secured by a calf leather strap, model H6004051001, which tapers to a 20mm buckle width and is fastened using a stainless steel folding clasp for ease of use and security.

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