A:AnswerYea, it can be done to a smart phone or a computer. The fitbit app is required for it to dump all the statistical information to for a centralized viewing.
A:AnswerI traveled from Wisconsin to New Jersey, then to Frankfort and on to Venice. My fitbit got stuck on New Jersey time and I couldn't figure out how to change it until I had been back in Wisconsin for 5 days.
A:AnswerYes. I walk on a small track inside of a gym. Since the space is too small to register on GPS, I select Treadmill instead of Walking and set laps at 5 minutes each. The Charge 5 tracks distance, pace, and laps.
A:AnswerI don't know if you can add the Charge 5 to your account without removing the Fitbit 1. I know that they app will only allow you to work with one watch.