Fitness trackers all seem to have similar features; pedometer, calories burned, heart monitor, sleep tracker, watch, etc. They?re great for helping to track the daily habits of an average person or someone beginning a fitness or health regimen. However, most fitness trackers are just too basic for a serious athlete or someone interested in their overall fitness condition. That's where the LifeTrak Zoom HRV (model number LTK7M002) comes into play. The LifeTrack Zoom HRV will continuously measure heart rate and heart rate variability which helps a true athlete know when to train and how hard to push. It's the perfect multi-sport fitness tracker and an extremely thorough heart rate monitor.