Since my Garmin HRM *** measurement equipment is send for repair I used the HRM send out of my Vivioactive 4s. This does work, although it is not that accurate compared to the *** measurement. After the activity is stop the send out of the HRM signal. But somehow the battery is still drained after that. So with the stopped HRM send out the battery is drained in about 12 hours.
Please let me know how to change this!
