Manufactured in accordance with US military standard 810G for thermal performance and resistance to shocks and water (up to 100 meters). It has a three-axis compass and an integrated barometric altimeter, and offers compatibility with several global satellite navigation systems (GPS, GLONASS and Galileo) to enjoy better tracking in more demanding environments than if only GPS is used. Control your heart rate, your activities and your level of stress; train with pre-installed activity profiles. Stay connected thanks to smart notifications and automatic data uploads to the Garmin Connect ™ virtual sports community. Use the TracBack® function to return to the starting point following the same route; use the Garmin Explore ™ website and application to plan your trips in advance. Battery / battery life: up to 14 days in smart watch mode, up to 16 hours in GPS mode and up to 40 hours in UltraTrac ™ energy-saving mode (depending on settings).