The Polar RCX3 GPS is designed for the recreational runner or cyclist who"s looking for smart guidance when preparing for an event.The Training Benefit gives you instant feedback after your session whilst the device ensures you train at the right intensity with personal sport zones.The Running Index scores your performance as well as tracking your route, speed and distance with the optional GPS sensor.Features: *Body measurement features*CS cadence sensor W.I.N.D. features*CS speed sensor W.I.N.D. features*Data transfer*G3 GPS sensor W.I.N.D. features*G5 GPS sensor features*Polarpersonaltrainer.com features*Recording features*s3/s3+ stride sensor features*Training features*Watch featuresIn The Box:*Polar RCX3 training computer*Polar WearLink+ transmitter W.I.N.D.*Polar G5 GPS sensor*Polar DataLink data transfer unit*RCX3 Getting Started Guide*G5 GPS sensor User Manual