When you can rely on Instinct™, the world can rely on you. This rugged GPS watch is built to MIL-STD-810G and is water-rated to 100 meters. A built-in 3-axis compass and barometric altimeter plus multiple Global Navigation Satellite Systems help you track in more challenging environments than with GPS alone. Monitor your heart rate all day with Elevate™ wrist heart rate technology, and take your training to the next level with preloaded activity profiles. Smart notifications at the wrist keep you connected to the world, while theTracBack® navigation feature and the Garmin Explore™ website and app give you the tools to explore it.