A:AnswerThe only difference between the regular and Nike+ is that the Nike + has exlusive watchfaces and it has a shortcut to opening the Nike app( as well as a small Nike engraving on the back of the watch)
A:AnswerThe ecg is a feature to be added to the new Apple watch. It is an electrocardiogram which tracks your heartbeat on a chart. It shows how regular or irregular your heartbeat might be.
A:AnswerAs you are buying the watch outright you can buy cell service for 10$ on your own. As long as your company has an ATT watch I would think you are ok