Body Composition Analysis: Know your body, own your body. With the built-in BioActive Sensor, measure your body's fat percentage, skeletal muscle, body water and more. Level up your fitness game straight from your wrist. Health comes first: Get Blood Pressure and ECG readings, all from a twist of your wrist. It's a watch that's watching out for you. New mood, new look: Pick and mix from a large selection of watch faces that matches your mood.