The PSBTHR60 Bluetooth Training Sensor allows you to monitor your heart rate while performing any cardiovascular activity. Connect the Wireless sensor to the included Chest Strap and you are ready to go. Bluetooth 4.0 Wireless Technology allows you to accurately record your heart rate to help you keep track of your health. Use your iPhone, iPad or iPod and download the free app, APA COACH+ from the App Store and you’ll be able to monitor your exercise duration, heart rate, distance, calories, steps and speed. Also compatible with other downloadable fitness apps, works for iOS devices only. Wireless Data Transmission for Measuring Speed, Cadence, RPM and More, Fitness and Training.