Do what you love, longer with the Instinct Solar. This rugged GPS smartwatch boasts solar charging —giving you incredible battery life in smartwatch and expedition modes. Monitor how your body uses energy by tracking heart rate, stress, estimated sleep, and Pulse Ox, which helps give you a better understanding of your health and wellness. Get more out of the sports you love with preloaded activity profiles such as running, biking, swimming, and more. When paired with a compatible smartphone, smart notifications keep you connected to what matters. Multiple global navigation satellite systems are designed to help you track wherever your adventures take you. Battery Life— Up To 24 Days/ 54 Days With Solar — Battery Saver Watch Mode: Up To 56 Days/ Unlimited With Solar — GPS: Up To 30 Hours/ 38 Hours With Solar — Max. Battery GPS Mode: Up To 70 Hours/ 145 Hours With Solar — Expedition GPS Activity: Up To 28 Days/ 68 Days With SolarFeaturesView how various settings and sensors impact your watch’s battery life, so you can make battery-extending changes on the fly. The rugged GPS watch is water-rated to 100 meters and constructed to U.S. military standard 810 for thermal, shock and water resistance.The watch features a built-in 3-axis compass and barometric altimeter plus multiple global navigation satellite systems that track in more challenging environments than GPS alone.Track all the ways you move from walking, running, cycling, pool swimming, golf and more.Help understand your health and wellness better with all-day health monitoring and Pulse Ox, which gauges your blood oxygen saturation during the day and as you sleep to show how well your body is absorbing oxygen.Monitor how your body uses energy by tracking heart rate, stress and sleep estimates with Body Battery™ energy monitoring. Receive emails, texts and alerts right on your watch when paired with a compatible smartphone.