Wrist-style heart rate monitor and stopwatch geared for elite level athletes and coaches With optionally available S3 Stride Sensor, receive highly consistent and accurate speed/pace, distance and cadence data Polar WearLink W.I.N.D. transmitter with 2.4 GHz disturbance-free transmission Includes Polar Protrainer 5 training, planning and analyzing software Dual time zone, alarm with snooze, and water resistance to 50 meters

Polar S3 Stride Sensor W.I.N.D., Wearlink W.I.N.D. Running Index, Running Cadence, Training Planning w/Polar Protrainer 5 Online Running Coach, Altimeter, Accurate HR, OwnIndex, OwnOptimizer, OwnCal 99 Memory Files/99 Laps w/Total Recall 2-year warranty

Wearlink W.I.N.D, Training Planning with Polar Protrainer 5 Online Running Coach, Interval Trainer Altimeter, Accurate HR, OwnIndex, OwnOptimizer, OwnCal 99 Memory Files, 99 Laps with Total Recall 2-year warranty

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 sensor W.I.N.D., you'll be able to track your progress with running index as well as stride length and running cadence.

No matter the terrain, whatever the sport, the RS800CX Multisport is the most accurate way to measure your speed and distance as well as plan, monitor and analyze your body's response to your training sessions. You can also see your route on a map after the training session. Ideal for cross-terrain sports like running, cycling, Nordic skiing, in-line skating, and kayaking, this is an essential addition to your training.

At the heart of your training lies the RS800CX wrist unit. With the ability to record a wide range of performance details, the unit works with the WearLink+ transmitter W.I.N.D. to provide you with the most accurate measurement of your heart rate. This kit at the most basic level is compatible with all W.I.N.D. sensors, so you can create and build on your training system to keep up with all your training challenges - now and in the future.

Get the most out of your performance with the RS800CX. With its professional training software you can effectively plan and analyze every detail of your ride. See your route profile and total meters climbed with the altitude, ascent and descent features, as well as uphill or downhill steepness in percentages and grades to help you to track your efficiency effort while training.

For the runner that requires nothing but the best. The RS800sd is the ultimate running icon for planning, monitoring and analyzing training. Includes new Polar S3 Stride Sensor™ W.I.N.D. for detailed speed/pace and distance tracking.