This is the latest monitor by Polar and obviously, the best one. The added features (and cost) is for weight training. The simple idea is to pick a workout zone and the watch will tell you how much time to rest in between sets. Along with tons of new features that will have your body performance to the exact level you want it too. Watch this video for more details. For a range of workout types and being able to track them all, the Polar FT80 is for you!