Kt service do what you love, longer with <strong>instinct® solar</strong>. This rugged gps smartwatch boasts solar charging — giving incredible battery life in smartwatch and expedition modes. Get all-day health monitoring for a better picture of your health, and activity tracking for running, biking, swimming and so much more. <ul> <li>up to 24 days of battery life in smartwatch mode or 54 days when solar charging — and up to 30 hours in gps mode or 38 hours when solar charging</li> <li>rugged gps watch is water-rated to 100 meters and constructed to u. S. Military standard 810 for thermal, shock and water resistance</li> <li>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</li> <li>track your activities for running, biking, swimming, strength and more</li> <li>help understand your health and wellness better with all-day health monitoring and pulse ox<sup>2</sup></li> <li>monitor how your body uses energy by tracking heart rate, stress and sleep<sup>1 </sup>with body battery™ energy monitoring</li> <li>stay connected with smart notifications<sup>3</sup> to see messages right on your wrist</li> </ul> view how various settings and sensors impact your watch’s battery life, so you can make battery-extending changes on the fly  