The <em>Polar</em> F4 <em>heart</em> <em>rate</em> <em>monitor</em> helps keep fitness enthusiasts in the correct zone for optimized training benefit. Visually follow the time in your <em>target</em> <em>heart</em> <em>rate</em> zone via the fitness bullets displayed. Set your <em>heart</em> <em>rate</em> limits and stay informed
The F4 Red Berry women's <em>heart</em> <em>rate</em> <em>monitor</em> from <em>Polar</em>& combines all the necessary <em>heart</em> <em>rate</em> features with a new, slim design. It includes the popular Zone Pointer feature that helps keep you in your <em>Target</em> Zone and OwnCal& to track the calories you burn during your exercise. With a stopwatch and convenient button-free operation, the F4 is a valuable fitness tool.