What can be better than having a little heart beat monitor on your wrist? Yes, we are talking about one of the amazing feature that some of the best smartwatches offer to their users. SmartWatch Heart Rate Monitor is one of the most worth-keeping and reliable features a smartwatch could contain and offer. Keeping an eye on your heart beat can keep you motivated about your exercise and let you exercise as per your stamina and heart rate. This feature monitors the changing heart rate of the users and keeps them notified. Adidas Fit Smartwatch and Nike SportWatch are undoubtedly the best.