Like with everything else, watches have evolved with time. There are mechanical watches, battery, solar, and kinetic powered watches. Mobile watch, ie. the wristwatch was popularized and materials used for the straps are all metals, including materials like leather. Sapphire crystals are used in watches to improve the quality and durability. Electronic watches with quart movements are mainly used these days. They do not need batteries and get charged with movement of the wrist. A mechanical watch does need winding up but lasts longer. Many centuries ago, man was able to tell the time by looking at the uniqueness of the metal or precious gems used or the intricacy of the design. Similarly, youngsters would look for watches that make a fashion statement with lots of new features. Brand is the main thing people look for while buying a watch as a fashion accessory. Cartier, Rolex, Seiko, Omega, Swatch. Casio, Tag Heuer are a few of the top watch brands that are famous for their quality, look, and design. Some of them stock jeweled watches studded with precious gems like diamonds and other gems, that gives the watch an unusual and elegant look. They have thousands of varieties in men's and women's