For serious athletes and adventurers who want to do more, not wear more — f?nix 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 rate¹, 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.