Polar H9 heart rate sensorPolar H9 is a high quality heart rate sensor for your everyday sports. It comes with the Polar Soft Strap and tracks your heart rate accurately. Polar H9 is ideal with the Polar Beat app as well as many 3rd party apps: you can turn your phone into a fitness tracker easily. Further, Bluetooth, ANT+ and 5 kHz technologies ensure connections to a large variety of sports devices and gym equipment. Thanks to chest strap measurement Polar H9 reacts instantaneously to what happens in your body and gives you accurate calorie burn.Works not only with Polar Beat app and many 3rd party apps, but also with a large variety of sports watches, cycling devices and gym equipment. This is due to Bluetooth, ANT+ and 5 kHz technologies, which can also be active simultaneously.The ideal jack-of-all-trades sensor for all your everyday sports.Accurate calories and heart rate thanks to chest strap measurement.Battery life is 400 hours. FEATURES:- Works with Polar Beat and many other fitness apps, all Polar Bluetooth devices as well as many sports and smart watches- Works with ANT+ devices such as sports watches, gym equipment and cycling computers- Works with 5 kHz gym equipment- ANT+ and Bluetooth connections can be active at the same time- Reliable and accurate heart rate measurement and calorie consumption- Machine-washable textile strap- Battery life 400 hours- Water-resistant 30m