Hamilton

Railroad Auto

Reference Number :

H40555181

Series : American Classic

Retail: $995

(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 TakeHamilton's deep-rooted connection to America's railways isn't just a historical footnote; it's the very soul of the Railroad Auto. This isn't some dusty relic, but a modern machine built with that same spirit of punctuality and rugged reliability. You can feel it in the solid 40mm stainless steel case and see it in the clean, almost gauge-like grey dial. The blue accents on the inner hour track are a fantastic modern touch, a subtle nod to design without screaming for attention. But the real star here is the workhorse H-10 movement humming away inside. An 80-hour power reserve means this watch is ready to go from a Friday at the office straight through the weekend without missing a beat. It’s a piece that respects its heritage—the 'Watch of Railroad Accuracy'—while being perfectly engineered for today's world. Looking through the open case back at that automatic movement in action is a constant reminder of the incredible engineering strapped to your wrist.

DescriptionThe physical housing of the H40555181 model is fabricated from stainless steel, presenting a circular case with a diameter of 40mm and a total thickness of 11.35mm. These dimensions are complemented by a lug width of 20mm, designed to integrate seamlessly with its designated bracelet. Protecting the dial is a high-grade sapphire crystal, a material renowned for its superior scratch resistance. This crystal is further enhanced with an anti-reflective coating, a technical feature applied to minimize glare and optimize readability from any angle. The construction guarantees water resistance to a pressure of 5 bar, which translates to a depth of 50 meters or 73 pounds per square inch. An open case back is integrated into the design, allowing for direct observation of the movement's operation.

At its core, the timepiece utilizes the Caliber H-10, a self-winding automatic movement developed by Hamilton. This advanced caliber is engineered to deliver an extended power reserve of 80 hours, significantly reducing the frequency of required winding. The operational display is a grey-colored dial, meticulously designed for clarity. It features distinct minute markers on the outer track and a date window at the 3 o'clock position. The reference H40555181 is equipped with a matching stainless steel bracelet, identified by strap reference H6054051021. This multi-link bracelet is secured to the wrist with a robust folding clasp, designed for both security and ease of use. This model is a current offering within the American Classic collection.

GenderMen

SignaturesHamilton

Country of OriginSwitzerland

Case Size40 mm

MovementAutomatic

CaliberH-10

FunctionsHours, Minutes, Seconds, Date

Power Reserve80 Hours

Case MaterialsStainless Steel

Bezel MaterialsStainless Steel

Lug MaterialsStainless Steel

Case BackSapphire Crystal