The Fitbit One is the latest fully featured wireless fitness tracking device to make a splash in today's smart gadget market, and it's finally here to replace Fitbit's longstanding Ultra wireless fitness tracker with an all-new rain and sweat-resistant design featuring a devious sleep tracking and silent alarm capabilities, along with the usual pedometer features like keeping track of steps, calories burned, distance and the number of stairs you've climbed throughout your day. It sure looks the part from up here, but the real question is how well can it count when put thru the ultimate test? Catch out full, in-depth review of the One after the cut!