The Polar RC3 GPS is the bike version of the watch, designed for the recreational cyclist who"s looking for smart guidance when preparing for an event. This set includes a H3 Heart rate monitor for accurate heart rate information on all Polar training products, it features a soft textile chest strap seamlessly adapts to your body shape.This Bike version of the monitor is different to the standard version in that it includes the Polar CS speed sensor W.I.N.D. Some of the features of this include the following:*You can define settings up to two to three bikes in your training computer. When you start training, you can select the bike with the correct settings for that particular training session.*By activating Autostart/autostop feature, the cycling computer starts and stops training recording automatically when you start or stop pedaling.*Distance (km, mi) can be set and measured in several ways. Training distance tells you the distance traveled during a training session. Lap distance tells you the distance of one lap. Trip distance tells you the distance from the latest trip reset. Total distance is the distance accumulated since the last reset.*Race Pace allows you to set a target speed/pace for a certain distance. It then helps pacing the run or ride by showing the current speed/pace and by telling in time, how much you are behind or ahead of the set target*You can define your target zones for a training session based on speed. When you are out of the preset zones, the training computer will give a visual and audible alarm.As well as these features, there are also some more generic features common with all RCX5 models.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 th