The instructions in this section apply to Garmin and Suunto heart rate equipment. Battery Information Wearing the Garmin or Suunto Chest Belt Pairing Your Garmin Watch with Your PM4 Pairing Your Suunto Chest Belt with Your Suunto t3/t3c/t3d Watch Pairing a Chest Belt with a PM4 or PM5 Pairing a Garmin Watch with a PM5 for Heart Rate Monitoring