T
Tachymeter -Speed can be calculated with a tachymeter, also called a speedometer. In wristwatches, a scale with speed indicators is usually located on the bezel or the outer dial, which can be used to convert a measured reading of time.
Titanium - Titanium is an extremely robust, anti-allergenic metal and is often used for components that are subject to wear due to its special qualities. It is also surprisingly light.
Tourbillon - A tourbillon is a mechanical complication found in the movements of high-end mechanical watches. It was invented during the era of the pocket watch, and is both hypnotic and fascinating to watch. To get technical - tourbillon is used to compensate for 'gravity-induced rate deviation' and was originally developed for pocket watches, which usually remain rigidly in one position, to enable a constant rate. Since watches are regularly moved about on your wrist, a tourbillon serves no great practical function, but offers a purely aesthetic benefit.
Tudor - Montres Tudor, known simply as Tudor, is a Swiss watchmaker based in Geneva. Registered in 1926 by Hans Wilsdorf, founder of Rolex, the brand remains a sister company to Rolex; both companies are owned by the Hans Wilsdorf Foundation.
At the time of writing Watch Buyers has this fabulous Tudor in stock - the Tudor Heritage Black Bay
You can search all available Tudor watches here at Watch Buyers, by clicking on this search button,
TAG Heure - A well known entry-level luxury watch brand. Tag Heuer can trace its origins to 1860 when a 20-year-old called Edouard Heuer opened a small workshop in Saint Imier, Switzerland. The “TAG” stands for Techniques D’avant Garde. And as for the Heuer - as companies grow, they are rarely consistently owned by one family, and TAG is no exception. In the early 60s, Heuer acquired the watch brand Leonidas, and started to make watches under the “Heuer-Leonidas” name. Giving the company at a later date the second part of its name to join with the first. So - it's got nothing to do with the common misbelief of 'days and hours'!
You can find all available now TAG Heuer watches by clicking on this search button.
U
Unidirectional bezel - This type of bezel can only be turned in one direction and is commonly used in diving watches. It has the same purpose as the count-up bezel and ensures the diver’s safety.
Ulysse Nardin - Swiss based luxury watch makers, founded 1846. The company became well known for manufacturing highly accurate marine chronometers and complicated timepieces. UN has plenty of watches with high complications such as a Tourbillon, Perpetual Calendar watch, or even a mechanical Alarm complication.