Report "I set up three zones, and turned on the heartrate zone alarm. My first zone was 80 to 110, then another from 145 to 160. The alarm beeped constantly during my 20 minutes of workout, during which my heart rate moved up and down between 100 to 160. Why does it beep constantly? The user manuals are USELESS - they just tell you how to use the buttons, not how to use the features. Thanks!"