Jawbone UP2 Wireless Activity Tracker The Jawbone UP2 is a system, wristband, and mobile app that tracks how you sleep, move, and eat. The Wristband syncs to both Android and iOS to give detailed statistics and update depending on what you are doing. Jawbone designed the UP to be worn for 24 hours a day, 7 days a week without sacrificing function for comfort. The app will also send you alerts on your mood, if you have been idle for too long, when to eat, and much more. UP also delivers personalized insights and clear tips to help you achieve your goals.