The SmartWatch 3 is a smartwatch from Sony that can runs the Android Wear operating system.

Apps that calculate your body mass index (BMI) can provide a window into your health. But which ones really work and are also easy to use? Live Science finds out.

The Jawbone UP24 is a fitness tracker that tracks steps, distance walked, calories burned, and sleep patterns. Here's what I found after wearing the device for a week.