Vastly extended battery life through solar chargingRugged GPS watch is water-rated to 100 meters and constructed to U.S. military standard 810 for thermal, shock and water resistanceBuilt-in 3-axis compass and barometric altimeter plus multiple global navigation satellite systems (GPS, GLONASS and Galileo) track in more challenging environments than GPS aloneRecord the number of waves surfed, maximum speed reached and distance traveled by using the surf activity profile; tide data lets you stay up to date on ocean conditionsTrack your activities for running, biking, swimming, strength and moreHelp 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 monitoringStay connected with smart notifications (when paired with a compatible smartphone) to see messages right on your wristView how various settings and sensors impact your watch’s battery life, so you can make battery-extending changes on the fly