It's important that you listen to your body to workout at the right intensity level for you. The new Bluetooth(R) Smart technology allows you to transfer your heart rate information to the MapMyFitness app wirelessly without any additional adapters. Not only will you be able to see your max hr and avg hr during your workout, but you'll also be able to see it per mile and hear current heart rate with Audio Mobile Coaching. After your workout you can also view total time in each heart rate zone.
Bluetooth 4.0 Technology allows you to wirelessly connect to many smartphones and bike computers.
Only works with the iPhone 4S, 5, 5S, Samsung Galaxy 3, 4, Note 3 and HTC One (must be running latest 4.3 operating system for supported Android devices).
DOES NOT work with the iPhone 3G, 3GS or 4. 30 ft. transimssion range.
Easy to replace battery with very low energy consumption.
Adjustable and washable soft chest strap that clasps on the side for ultimate comfort.