Digital watch, 1972
Watches made the short journey from bosom to wrist during the 19th century, due in part to the craze among middle-class women for cycling. Their new, more convenient position made sense and they developed quickly. Rolex made the first waterproof watch in 1926 and a year later the ultra-accurate quartz-crystal controlled clock arrived. Watches finally went digital in the 1970s when the Hamilton Company developed the Pulsar, which sported lights in place of hands; the liquid crystal display (LCD) followed in 1977.