Lightweight and compact the Fenix 5S is the sleeker more refined model from the new Fenix 5 series. Designed to be more but not weigh more, the Fenix 5S VO2 max estimator crunches data collected from the Elevate wrist based heart rate monitor to help inform and improve your chosen sport performance. Using the high resolution, ultra-rugged Garmin Chroma Display athletes and adventurers can see in real time how well and how hard they are working. Check your performance condition, the lactate threshold, the cadence and stride length in running mode; measure your shot to pin in the Golf mode or check the speed and elevation in Ski mode with accurate readings all provided by the ABC (altimeter, barometer and 3-axis electronic compass) with super accurate geo-location tracking from dual GPS and GLONASS satellite positioning. Workout completed? Dive deeper into analysis, share and compete with other athletes using the Garmin Connect app.