Polar RS400 Advanced Heart Rate Monitoring Watch

The Polar RS400 Advanced Heart Rate Monitoring Watch for endurance athletes and runners who rely on systematic training. It helps avoid over or under training by aiding you to train at the right intensity. The RS400 measures detailed information about your performance. The Polar Fitness test measures your aerobic fitness at rest and tells you your progress. It comes with Polar ProTrainer 5 software for analyzing, planning and keeping a training diary.