• Vastly extended battery life through solar charging • Rugged GPS watch is water-rated to 100 meters and constructed to U.S. military standard 810 for thermal, shock and water resistance • Built-in 3-axis compass and barometric altimeter plus multiple global navigation satellite systems (GPS, GLONASS and Galileo) track in more challenging environments than GPS alone • Track your activities for running, biking, swimming, strength and more • Help understand your health and wellness better with all-day health monitoring and Pulse Ox(this is not a medical device and is not intended for use in the diagnosis or monitoring of any medical condition) • Monitor how your body uses energy by tracking heart rate, stress and sleep estimates with Body Battery energy monitoring