Beautiful, bright AMOLED display and up to five-day battery life in smartwatch mode; up to six hours in GPS and music mode. The broadest range of all-day health monitoring features keeps track of your energy levels, respiration, menstrual cycle, stress, sleep, estimated heart rate and more. Collect information about your body’s energy levels, blood oxygen saturation, daily water intake, and sleep quality. Easily download songs to your watch, including playlists from Spotify, Amazon music or Deezer (may require a premium subscription With a third-party music provider), and connect with headphones (sold separately) for phone-free listening. Record all the ways to move with more than 20 preloaded GPS and indoor sports apps, including yoga, running, pool swimming and more. Get easy-to-follow, animated cardio, strength, yoga and Pilates workouts right on your watch screen. Smartphone compatibility-iPhone, Android. SMS, Calendar, e-mail and social notifications. Monitor your heart rate and blood oxygen saturation to support advanced sleep monitoring and altitude acclimation at high elevations. Supports multiple global navigation satellite systems (GPS, GLONASS, and Galileo) and built-in sensors for three-axis compass, gyroscope, and barometric altimeter to track in more challenging environments.