The RS800CX watch is the ultimate training computer for multi-sport athletes.

The RS800CX also offers a variety of proprietary Polar functions. The ZonePointer, for example, is an audible and visual feature on the display of your watch that shows you where your current heart rate sits within your target heart rate zone. The Polar OwnZone mode, meanwhile, provides a customized target zone for individual exercise sessions. Finally, the Polar OwnCal mode shows your energy expenditure during one exercise session, as well as your accumulated kilocalories during several exercise sessions. You can also set daily and weekly exercise goals in terms of calorie expenditure, helping you achieve both short-term and long-term goals. Other proprietary Polar functions include a Polar fitness test that measures your aerobic fitness at rest in just five minutes; a ZoneLock button that activates a target zone alarm while exercising; and an OwnOptimizer mode designed to keep you from undertraining or overtraining--a must when trying to improve overall performance.

The watch comes with the runner-specific S3 Stride Sensor W.I.N.D.

This version of the RS800CX comes with Polar's S3 Stride Sensor W.I.N.D., a compact transmitter that mounts to training shoelaces or inside a specially designed mid-sole cavity in adidas adiFusion MC and adiStar Fusion running shoes. The S3 Stride Sensor does more than just measure speed and distance, but also provides insight into the stride itself. By measuring each stride you take, the sensor can help you perform better in competitive situations, where shorter and faster strides can have a dramatic impact on your overall performance. The S3 communicates this stride data directly to the RS800CX, which analyzes the data in a variety of ways. The RS800CX also supports other optional W.I.N.D. sensors (sold separately) that are custom built for various training needs. The CS Speed Sensor pod, for example, accurately measures your cycling speed and distance, while the aforementioned G3 GPS sensor accurately tracks your movement during less-traveled sports, such as canoeing, mountain biking, rowing, or Nordic skiing. With the purchase of all three W.I.N.D. sensors, your RS800CX will become an extremely versatile multi-sport training computer.

Other watch features include several recording options to help track your heart rate, calorie expenditure, distance, and more and save it in an exercise file (with 99 total files); water resistance to 50 meters; a Polar WebLink connection for transferring exercise data from your wrist unit to a computer; a 12/24-hour clock with a day/week indicator; a built-in backlight; an alarm with a snooze; and a low battery indicator. Sporting an attractive silver housing, the watch carries a two-year warranty.

Manufacturer's Warranty
The original purchaser of this heart rate monitor is backed by a limited warranty that states that this product that the product will be free from defects in material or workmanship for two years from the date of purchase.

About Polar
The first EKG accurate wireless heart rate monitor was invented by Polar back in 1977 as a training tool for the Finnish National Cross Country Ski Team. The concept of "intensity training" by heart rate swept the athletic world in the eighties. By the 1990s, individuals were looking to heart rate monitors not only for performance training needs, but also for achieving everyday fitness goals. Today, the same concept of heart rate training is being used by world-class athletes as well as everyday people trying to lose weight. Polar is the leading brand among consumers, coaches, and personal trainers worldwide and the company is committed to not only producing the best products, but also being the leading educator on the benefits of heart rate based exercise.