Lightweight & 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 & improve your chosen sport performance. Using the high resolution, ultra-rugged Garmin Chroma Display athletes & adventurers can see in real time how well & how hard they are working. Check your performance condition, the lactate threshold, the cadence & stride length in running mode; measure your shot to pin in the Golf mode or check the speed & 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 & GLONASS satellite positioning. Workout completed? Dive deeper into analysis, share & compete with other athletes using the Garmin Connect app.