Over the years, the lines between fitness trackers and smart watches are getting blurred with each passing day, and you can buy any one of them that can act as both. In the middle of all this analogue-digital watchmaking, one watchmaker is still holding its traditional roots and has come out with yet another product, defining a company's conventional watch line-up. We are talking about Casio, known for its rugged G-Shock watch line-up.