Fitbit has updated its algorithm for more accurate sleep tracking. The new algorithm now accounts for awake times better, supposedly rendering more accurate data about different phases. However, users ...

Overall this model was very easy to use, very accurate for counting steps, and very good at measuring heart rate accuracy. With recent version iPhones, our experts found it very easy to pair, very ...

The Fitbit Charge 2 also has an extended battery life and has been redesigned with a larger screen. It has heart rate sensing built-in (unlike the original Charge, which had a heart rate sensing and ...