I’ve only used the Galaxy Watch 4 with a Samsung phone right now, but how this will work with other Android phones remains a big question. Then again, Samsung had Bixby on its previous Android-connected Galaxy watches, too.
Scott Stein/CNET
Samsung’s new body analysis sensor is easy to use, but it’s stressing me out
To get information from the electrical impedance-based body sensor, you touch two fingers to the watch buttons for 15 seconds and stay still, completing a circuit while the watch measures a mild current passed through the body. It’s a bit like doing an electrocardiogram (EKG or ECG) reading for heart rate, except faster. It produces readouts of body mass index, skeletal muscle mass, water weight and body fat percentage. It estimates actual numbers, and also pinpoints each on a little range from green (low) to red (high).
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