I had to buy a Tag Link because of my job is really hard on a watch. I was buying Seiko's about every four to six months. The Tag is stainless steel, I can sterilize it in the dishwasher, and its been a trooper for almost eight years. It was pricey but over the long haul has shown to be worth it.
Cell phones are a liability, they get broken easily, go off at the absolute wrong times, and require a free hand to use.