This is the Fitbit Surge, a $250 'superwatch' with built-in GPS

Fitbit is preparing to launch three new fitness trackers in the coming weeks. Two of those will be the Charge and Charge HR. The Charge looks to be a revision of the Fitbit Force, which was pulled off the market after it caused bad skin reactions for some customers. Charge HR will offer a bit extra with the addition of PurePulse, the company's wrist-based heart rate monitoring system. But there's more: Fitbit has also been working on a third, flagship wearable for serious athletes. It's the Fitb...