For elite runners

For those who are seriously into their running, the RS800CX helps to plan, monitor and analyze every part of your training. Its range of personal training zones means you can train at the right intensity, and with advanced features, that come along with the s3 stride sensorTM W.I.N.D., you'll be able to track your progress with running index as well as stride length and running cadence.

• Measures heart rate combined with running speed, distance, cadence, and average stride length
• Synchronizes with the Polar ProTrainer 5™ software for guidance, analysis and creating individual training settings
• Highly sensitive barometric altitude sensor shows your elevation profiles
• Determines if your training program and recovery time are optimally developing your performance
• Objective measurement of your performance level during each run via the running index feature