UP Large Wristband System and iPhone App - Black UP is a system, wristband + iPhone app, that tracks how you sleep, move and eat so you can know yourself better, make smarter choices and feel your best. Features: * Designed to be worn 24/7;up to 10 days of battery life * Sleep and Nap Tracking: Intelligently tracks hours slept, light vs. deep sleep and waking moments. * Insight Engine: Discover hidden connections and patterns in your day-to-day activities. * Water Resistant Design: Able to withstand thousands of showers, and the occasional snowball fight. * 24/7 Activity Tracking: Track every move, including distance, calories burned, active time and activity intensity. * Idle Alert: Reminds you to move when youve beeninactive for too long. * Day and Night Form Factor: Designed for comfort. Because the more you wear it, the more youll track. * Food & Drink Tracking: Intelligently tracks hours slept, light vs.deep sleep and waking moments. * Smart Alarm: Wake up feeling refreshedat the right moment in your sleep cycle. * Power Nap: UP will wake you upat the optimal time (around 26.5 minutes) after you fall asleep.. * Mood Tracking: Log your mood and discover connections that affect how you feel. * 10-Day Battery: Track every last step (and nap) without running out of juice. * Simple Sync: No Bluetooth, no pairing, no conflicts. No problem.