The chest strap supplies the Runtastic app with heart rate data WITHOUT an additional adapter
2-in-1: Signal transmission via Bluetooth? smart and analogue signal transmission (5.3 KHz)
Individual training range and alarm
Compatible with iPhone 5s/5c/5/4s and Bluetooth? Smart Ready devices running AndroidTM 4.3*


Textile chest strap with flexible tension belt for extremely comfortable wear? convenient hook closure
Removable transmitter? washable textile chest strap
Average and max. heart rate
Accurate ECG heart rate measurement
Calorie consumption in kcal
GPS navigation? speed and route recording with your smartphone
5 training zone suggestions
Free online account at www.runtastic.com: routes? statistics? social networking? Facebook? Twitter and more
Splash-proof (splashes/perspiration)
Incl. licence code for professional version of Runtastic app
*=List of supported smartphones: hardware.runtastic.com