We have been through best watches of Casio a lot of times but ever wondered why are they so popular and within reach of the masses? If no then let me take you to the trip down that history lane when watches were like pink diamonds only a rare few people had owned them. It was the time when only a few countries were making watches. At that time industry was not that advanced and humankind did not achieve much then.
Back in the 1600s clockmakers from Europe especially from Switzerland began experimenting and making small-sized more portable spring-driven clocks that eventually went from pocket watches to wristwatches. They were easy to carry and were a symbol of statement as well but they were Hella expensive so they were not with the reach of the laymen.
It was only in the 19th century after the industrial revolution when lots of watchmakers went on to mass-produce timepieces, mainly pocket watches, which became popular