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. 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