For serious athletes and adventurers who want to do more, not wear more fenix 5S is the perfect fit. It's our premium multisport watch that offers full-size performance in a lighter, sleeker, more compact design. So you can beat yesterday with advanced features such as wrist-based heart rate, built-in activity profiles, navigation functions, and performance metrics that measure the effectiveness of your workout. It's one smart sport watch you can comfortably wear anywhere office or outback to keep pace with your active lifestyle. Athletes and adventurers come in all sizes. That's why the fenix 5 series offers multiple models that vary in size to fit every wrist and every workout. Each version offers a variety of stainless steel finishes, QuickFit watch band combinations and premium feature sets to give you the look, performance and lightweight comfort to match both your aesthetic and athletic interests. Every fenix 5 series watch features advanced GPS and GLONASS satellite reception to track in more challenging environments than GPS alone. You can count on long battery life in each mode of operation (varies by model, depending on settings). And for go-anywhere confidence, all fenix 5 versions are water-rated to 100 meters.