The TomTom Runner Cardio is the Gps is perfect for monitoring your heart rate without the need for the heart rate monitor because it is equipped with a sensor that monitors the changes of blood flow in your wrist through contact with the skin!
You can also select a region from the training and decide when rallenatare or speed up, depending on your goal:
Sprint: used as part of a training intervallii
Speed: fast-paced to improve the physical form
Resistance training moderate to improve lung capacity
Fitness: moderate, ideal for losing weight
Relaxed: for the heating and the cooling down
You can have always under control all data related to your workout, and you can also load in a simple way, your activities on the most popular websites devoted to running

Display dimensions: 22 x 25 mm
Sensor (wireless):Bluetooth® Smart
Running indoors: Yes
Battery life: Up to 8 hours (GPS+HR), up to 10 hours (GPS)