Polar CS600X GPS-Enabled Monitor

Optimal Heart Rate for Cycling Performance For competitive cyclists who want to take their training to its highest level.
• Determines if your training and recovery times are optimally developing your performance
• Improves your cycling technique with cycling-specific data
• Displays the inclines and declines of your ride with altitude measurement
• Comes with Polar ProTrainer 5 software for analyzing, planning, and keeping a training diary