A watch with a retrograde display shows time in a linear way instead of the circular way like most watches. The hand moves along an arc until it reaches the end of the arc, when it does  it automatically resets to the beginning of the arch. In the photos below we are able to see [...]

We all know that Sapphire Crystal is harder than Glass, however it does have a higher index of refraction which makes it more light reflective. This of course hinders reading the time. For that reason watch manufactures apply anti-reflaction coatings that get rid of the problem. More than one transparent thin layers create a destructive [...]

The Calendar disc of the watch displays the date and in some cases the weekday, month, and year. However, the regular calendar watches do not take into account different lengths of the months making the user need to reset the date 5 times a year when the month does not end on the 31st . [...]

The Earth is divided in 12 time zones also known as meridians. GMT stands for Greenwich Mean Time, which is used as the time zone 0 in the Universal time. In the watch business a GMT Watch implies that the watch displays a second time zone or a 24-hour indication. This is useful for people [...]

Sometimes you see that a mechanical watch has 17 Jewels, or 13 Jewels, but what does that mean? They are called Jewel Bearings and are placed at the center of a rotating gear wheel. The jewels are  synthetic Rubies and their purpose is to minimize friction between hardened steel parts, increase accuracy, lower the weight [...]

Chronometer term is used to denote a very precise watch. These watches usually have a deviation of less than 5 seconds per day. Only watches that pass the Official Swiss Testing Office for Chronometers (COSC) test standards may use the chronometer word. The test consists of having the watch in observation for a few days [...]