Authentic POLAR CS500+ Cycling Computer Heart Rate Monitor

For ambitious cyclists seeking improved cycling performance
Measures heart rate combined with current, average and maximum speed
Oversized, aerodynamic display is highly visible in all conditions
Unique dual lock bike mount and rocker-switch operation gives you more precision and control - even at high speeds
Training Load graph at polar personal trainer; com tells when you are ready for your next ride (optional Data Link transfer device needed, MAC compatible)