Nice allround clock with many possibilities. However, unfortunately, it is not reliable at heart rate, calorie consumption and altimeter. Deviations to other Garmin devices that I have and have had show a significant error on the pulse of the clock, something more correct when taking excerpt from the data app afterwards. Have complained to Garmin on these issues, but these are certainly correct measurements. Then all my other bells and other Garmin products have been displayed in other words. Polar flow also has a better user interface than Garmin Connect. Really ends up being a tough gadget watch and no good sports watch.