For example, when flying, especially domestic flights you must turn off the phone. Especially when driving on the highway, you can watch the table, but it is best not to look at the phone (riding a motorcycle the same token). When swimming, especially when diving, the phone is totally useless. In the presence of the boss, wearing a watch (of course, your table is not expensive than the boss's table) is to reflect the concept of time you have, but frequently in front of the boss to see the phone, you can only look too much work private thing does not focus. Mobile phones have camera features, why photographers insist on using SLR? The study found that: watches attractive for the opposite sex much higher than the phone. As the saying goes: "Time and wearing the Patek Philippe watches with a value of 3 million with a cell phone look the same." But using a cell phone to watch time and wearing a watch worth 3 million Patek Philippe , but the difference! Another point: Do you still remember which phone you used ten years ago? Do you still remember this one today after ten years? But a decade ago, Rolex is a Rolex after a decade or Rolex , a hundred years later also. As long as mechanical watches properly maintained, the use of a one or two hundred years there is no problem.