The all new Runner Cardio GPS Watch from TomTom features a built in Heart Rate Monitor to get the most out of every run - no more wearing straps. The innovative heart rate sensor monitors changes in blood flow by shining light through the skin to detect changing reflections, shown to be remarkably accurate. Features 5 intensity zones you can train appropriately to achieve your goals. The extra large screen allows you to get the information you need at a quick glance, showing distance, time, pace, and calories burned.
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