Polar RCX5

The Polar RCX5 is on-wrist training computer designed to optimize and quantify the body's performance while running, biking, and swimming. For optimized session effectiveness the RCX5 features a ZoneOptimizer, which adjusts heart rate zones; Race Pace, which helps control speeds to achieve target times; and a variety of endurance training programs, which are downloadable via Polar's website.

Accessories include the lightweight and compact G5 GPS sensor, that measures speed, pace and distance, providing an online map view of training, and the WearLink+ Hybrid transmitter, that provides heart rate data even when underwater. Available in 4 product sets (Bike, Run, Multi, and Basic) each are designed for specific training styles, with varying prices according to bundle features.