Polar RS800CXSD Heart Rate Running Training System

The Polar RS800CXSD Heart Rate Running Training System for multi sports athletes who require a wide range of performance information. It helps avoid over or under training by aiding you to train at the right intensity. The multi sports watch measures detailed information about your performance. The Polar Fitness test measures your aerobic fitness at rest and tells you your progress. The watch comes with Polar ProTrainer 5 software for analyzing, planning and keeping a training diary.