I put on a wrist watch usualy because I can't know time. But it increase people who don't use a wrist watch because we have a cell phone that can show time accirately. I thought that a wrist watch is troublesome to put on everyday morning. I sometime forgot putting on that. In recently, I understand a necessity of a wrist watch. I can't use my cellphone sometimes. For example I receive the class, I can't use cellphone freele but I want know time. I use a wrist watch sometime recently but my wrist watch is difficult to grasp because it has only four makers. It don't show minites and I can't know time in detail. I want to buy new wrist watch that has a lot of maker.