Withings is behind some of the coolest health-related products around. Its scales, blood pressure tracker, and blood pressure monitor are more than useful. The Withings Smart Activity Tracker is a compact device that clips to your clothes and tracks your activity, food intake, sleep quality, and pulse rate. The tracker uses Bluetooth Smart (4.0) to sync to Withing’ Health Mate App. It offers a battery life of 2 hours. The pricing information is not known at this point.