Have an extra strap for when the other strap is in the wash, for another user or if your elastic strap is showing wear.

…when training. That?s why Polar created the Polar WearLink?+ 31 coded transmitter belt. It not only measures your heart rate but also seamlessly adapts to your body shapes so you feel as if it?s not even there. The transmitter consists of an electrode strap and a connector, and with its new side-clip…

…pioneered its development and continue to further technology in the field to improve resolution and eliminate interference. The WearLink+ W.I.N.D. Transmitter Set is a result of that dedication. With a soft textile chest strap it?s the latest generation of Polar?s proprietary heart rate sensing and transmission…

The training revolution continues as powerful as ever, thanks to the CS600X. With Power Output SensorTM it provides valuable data to improve your cycling technique, and the compatible G3 GPS sensor keeps track of your route. So you know where you've been, and you know where your performance is…

The CS600X is another perfect example of the training revolution. Advanced heart rate and training features make this the ultimate cycling computer. And by using the compatible G3 GPS sensor (optional), you can track and record routes, and take your training to its highest level.

Get all the essential heart rate features with this good-looking and simple-to-use training computer. RS300X is compatible with S1 foot pod? and G1 GPS sensor, so you can combine heart rate with speed and distance. Only then you can truly make sense of your training and be sure it's worth all the…

Get all the essential heart rate features with this good-looking and simple-to-use training computer. RS300X is compatible with S1 foot pod? and G1 GPS sensor, so you can combine heart rate with speed and distance. Only then you can truly make sense of your training and be sure it's worth all the…

For enthusiast runners You want to go for a run and know how speed and distance can aid your performance. Without heart rate, you can only get so far. The RS300X combines these three to give you a true understanding of the effort you put in. And on top, all the essential heart rate features come…

For enthusiast runners You want to go for a run and know how speed and distance can aid your performance. Without heart rate, you can only get so far. The RS300X combines these three to give you a true understanding of the effort you put in. And on top, all the essential heart rate features come…

For cross-sport training Speed and distance is nothing without heart rate monitoring. Only by combining these three with the RS300X, you can truly make sense of your training. G1 GPS sensor provides speed and distance in various outdoor sports, so you know it's worth all the effort.

For cross-sport training Speed and distance is nothing without heart rate monitoring. Only by combining these three with the RS300X, you can truly make sense of your training. G1 GPS sensor provides speed and distance in various outdoor sports, so you know it's worth all the effort.

Replacement battery for user changeable chest transmitter such as the Polar Wearlink chest transmitters and Polar W.I.N.D. Wearlink chest transmitters.