Keep on top of your fitness whilst you work out with the Wahoo iPad & iPhone Heart Rate Strap. Total tracking The Wahoo Heart Rate Strap measures your heart rate data when you exercise, the amount of time spent in each heart rate zone, your max heart rate, average heart rate & calories burned. The WFBTHR01 requires no additional charging & uploads results to the web wirelessly with the touch of a button. Phone monitoring The Wahoo Heart Rate Strap delivers accurate real-time heart rate data to your iPhone 4S through the Wahoo fitness app. You can convert your iPhone, iPad or mini iPad into a heart-rate-based training tool for running, cycling, & working out at the gym. It relies on Bluetooth 4 wireless connectivity to upload all the information you need. For fast, reliable data that will keep you informed on the move, look no further than the Wahoo iPad & iPhone Heart Rate Strap.