I've replaced the battery of HRM pro, is this correct? I saw that bulge after I fitted the cover. I don't think I can swim with this now. Can someone give me
Support: Changing the battery on an HRM-Pro™ Plus Heart Rate Monitor - YouTube
Support: Changing the battery on a Garmin Heart Rate Monitor - YouTube
Forerunner 920XT - Replacing the HRM-Swim Battery and the HRM-Tri Battery