HRM-2110 is a sensor type heart rate monitor that can detect heart rate when it is carried. If you play a sport regularly or would like to step up your training, this product is made for you. The design and comfort of this product have also been particularly developed to suit all body types and to make it suitable for use during sport. This is a chest belt speed and distance digital (Bluetooth,ANT+,5.3KHZ)transmission system. A chest belt that user comfortably wears against the skin and around his chest. It picks up the heart signals, and sends them wireless to the smartphone/PC. Heart rate information display on screen of mobile and send to remote web site for analysis by telecom.