Tom Tom Runner 3 + Cardio watch Heart Rate Sensor question...
Just got a runner 3 + cardio watch last week and using the firmware version of 1.7.64.
When I set the Heart Rate sensor to "on", I can see the green light on the back of the watch flashing and the bpm reading initially is showing --.
But after about 10 seconds it will start displaying some bpm settings (something like 65 or sometimes higher) even though i have not put the watch around my wrist at all.
Is this a normal behaviour or am i having a faulty unit?
Thanks all for answering.