Being a sensor type heart rate monitor, it will detect and send your real-time heart rate to devices supported accurately. The 2.4G ANT+ SPORT heart rate sensor works with any 2.4 heart rate monitor using ANT+ technology to provide continuous heart rate data. Compatible with all 2.4G ANT+ SPORT devices, namely, Colorado 300, 400c, 400i, 400t, Dakota 20, Edge 205, 305, 500, 705, 800, eTREX 30, Forerunner 50, 110, 210, 305, 310xt, 405, 405cx, 410, 610, 910xt, Foretex 401, FR60, FR70, GPSMAP62s, 62sc, 62st, 62stc, Oregon300, 400c, 400i, 400t, 450, 450t, 550, 550t and Samsung GALAXY S4 S5(Android 4.3 SHealth). The receiving device could be a PC with ANT+ dongle, a smart phone, a watch or other devices supported ANT+. Confirmed with the standard ANT + protocol, it allows various ANT+ devices to communicate with. With the chest strap based on high quality material, it can be attached to your skin closely. The most popular heart rate monitor in the world easy to use yet is very durable. Ultra low power consumption, the replaceable battery's life will last typically 1 year.