Manage all aspects of your life to become healthier with the FitBit One activity and sleep tracker. Designed to remain on your wrist, the FitBit One tracks your distance, calories you’ve burned, and even the stairs you’ve climbed. Additionally, it tracks the duration and quality of your sleep. Using the accompanying app and connecting the wristband via Bluetooth, you can view your stats as well as set goals, track progress, earn badges for motivation, and even challenge your friends to competitions. The FitBit app also allows you to track food and your workouts so you can start to see what works. The wristband also features a silent alarm to wake you up without disturbing your partner. The two-week lithium battery is easily recharged via USB.