You’ve never been one to follow the beaten path — that’s where Instinct comes in. This rugged GPS watch was built to withstand the toughest environments. The fiber-reinforced polymer case adds durability, and the chemically strengthened, scratch-resistant display is high contrast and sunlight readable. Instinct is built to the U.S. military standard 810 for thermal, shock and water resistance (rated to 100 meters). Internal, rechargeable lithium battery provides up to 14 days in smartwatch mode, up to 16 hours in GPS mode and up to 40 hours in UltraTrac battery saver mode. Access multiple global navigation satellite systems (GPS, GLONASS and Galileo) to track in more challenging environments than GPS alone. Navigate your next trail with ABC sensors, including an altimeter for elevation data, barometer to monitor weather and three-axis electronic compass. Take the guesswork out of your return journey by using this feature to navigate the same route back to your starting point. Use preloaded activity profiles for running, hiking, mountain biking, swimming and more. The heartrate is measured from the wrist.