High energy consumption

By and large, light emission is too energy-consuming to be supplied by batteries compatible in size with a watch. As a result of this constraint, the time could not be displayed continuously but only when activated by the watch's wearer, thus reducing the display time to no more than a few minutes each day. (Light emission consuming too much energy) Therefore, researchers developed contrast zone displays under electrical excitation, still based on the 7-segment digit configuration. Several principles were developed, only one of which ultimately won through: field effect liquid crystal display. This comes in the form of a small panel with a fairly light background of an undefined, predominantly grey colour. The activated segments appear as a very dark blue colour. Its energy consumption is very low, thereby allowing continuous use of the display, even over a period of several years. The appearance of these digital display watches is very different from that of the traditional watch, as indeed is their design. All time-related information is contained in the electronic circuits and the display is only used to access all or part of this information. As the integration density of electronics advances apace, we are seeing the emergence of a new type of product capable of providing its wearer with more information than just the time. The multifunction watch.