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Watch
Reference : H40656731
Caliber : H-21
Collection : American Classic
Movement : Automatic
Case size : 44mm
Dial color : Black
Case material : Stainless steel
Crystal : Sapphire
Lug width : 22mm
Lining Tanning : Mineral
Power reserve : 60-hour power reserve
Water Resistance : 5 bar (50m)/73 psi (164ft)
Anti Reflection : Yes
Open Case Back : Yes
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Bracelet/Strap
Strap reference : H6004051001
Strap type : Calf leather
Buckle type : Folding clasp
Buckle width : 20mm
Top Denotation : Leather
Top Species : Calf
Top Tanning : Combined
Top Imitation : Grained imitation alligator
Lining Species : Calf
American Classic RailRoad Auto Chrono
Automatic | 44mm | H40656731
The Railroad Auto Chrono transports you back in time to when Hamilton first made its name as a precision watchmaker, producing timepieces that helped improve safety on the early railroads. Heritage is the backdrop against which the Hamilton designers have created a versatile wear anywhere watch for the modern man. The automatic chronograph movement adds a dynamic touch and the snailed tachymeter satisfies the need for speed.
- Free 2nd Day Shipping
- 2-Year International Warranty
- Contact us: 1-800-234-8463 | Hamilton.US@swatchgroup.com
Features
Movement
H-21
The H-21 is a powerful automatic chronograph movement featuring an extended 60-hour power reserve, making it perfect for the demands of the sportiest of models. With an H pattern design on the oscillating bridge, there’s no mistaking who made this movement.

Delivery & Return
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Delivery
We offer free delivery for all orders. If you would like your order to arrive sooner you can select “Next-Day Delivery” (rates vary by location). To find out more information about our delivery options please visit our Shipping Policy.
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Return
We offer returns within 14 days from delivery. For more information, please visit our Return Policy.
*Due to public health restrictions, we may experience delays in processing returns. If you have an item that you would like to return, please contact our customer service department at 1-800-234-8463 or Hamilton.US@swatchgroup.com for additional information.