For the active runner who runs multiple events each year. You demand more information and analytical feedback. You want to shave off minutes and seconds from your personal best with proper training planning. RS400sd is your system for planning, monitoring and analyzing your running. With daily information on your aerobic fitness and running economy, the RS400sd meets your needs as an active runner with racing aspirations. Comes with the same running features as RS400, plus detailed speed/pace and distance tracking.

Also available with the S3 Foot Pod featuring nano technology for highly consisten and accurate speed and distance measurement. Click here for the Polar RS800sd Running Computer.

Also available without the S1 Foot Pod. Click here for the Polar RS400 Running Computer.

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