One dial with two scale rings

The Hamilton American Classic Railroad Lady Auto has two scale rings connected by the hour markings. The outer ring is used for the exact indication of minutes and seconds and can be read to the nearest third of a second. The third second lines are connected at both ends, giving the impression of railway tracks. Above the hour markings, the minute numbers in Arabic numerals are very small. The inner ring, on the other hand, bears only an unmarked minute scale. The positions of the hours can be read from the tips of the hour markings on the outer ring that touch the ring. They are also marked on the inside with diamonds.

Automatic watch with 43-hour power reserve

As an automatic watch, the Hamilton American Classic Railroad Lady Auto does not need to be wound up regularly and does not require a battery that runs down just when you need the watch most. It draws the energy for the movement from the natural movements of your hand while you are wearing it. But even if you take your Hamilton American Classic Railroad Lady Auto off overnight or do not wear it for a day, you do not need to worry about it. Thanks to its 43-hour power reserve, this masterpiece of Swiss watchmaking continues to run for almost two days with the usual Hamilton precision.