Hamilton American Classic Railroad Auto Chrono RAILROAD AUTO CHRONO Chronograph Mechanical Watch Automatic Winding Watch Automatic Winding 44mm H40656731 After purchase, I tried it on twice at home. The band has no wear and tear and is close to the condition at the time of purchase. A beautiful design inspired by the pocket watch, the origin of "Railroad". The beautiful spiral tachymeter line reminiscent of "Railroad" adopts a stylish color scheme that balances with the strap. Equipped with a chronograph function that symbolizes the evolution of the "railroad watch" that has informed railway crew members of the "passage" of time. Model Number: H40656731 Case Model Number: H406560 Caliber: H-21 Collection: American Classic Movement: Automatic winding (manual winding possible) Case Size: 44mm Dial Color: Black Case Material: Stainless Steel Crystal: Sapphire Crystal Belt Width: 22mm Power Reserve: 60 hours standard duration Daily Difference: Within ±5 seconds (actual measurement) Water Resistance: 5 ATM Retail Price: ¥234,300 Other Features: Anti-reflective coating, see-through case back, date display, chronograph Accessories: Genuine outer box, inner box, instruction manual, warranty card (2020 parallel, blank) Condition: Beautiful condition with no visible scratches on the crystal, back glass, or case. The side of the case has a special hairline finish, and there are very slight scratches (difficult to capture in photos). The band is also in beautiful condition, both front and back. *All images are taken of the actual watch. This chronograph is characterized by its unusually spirally arranged tachymeter. The design is also distinctive, and although Hamilton often uses the same case for different models, the case of this model is designed as a dedicated case. The area around the chronograph push buttons is guard-shaped, and when the case is held vertically, it resembles a pocket watch of the time. It is equipped with a large crown that can be manually wound, making it extremely easy to operate. The daily difference is also good, making it a recommended model for a mechanical chronograph debut.