The heart rate sensor
Your TomTom Touch has a built-in heart rate sensor to help you train more efficiently.
How the sensor works
Your heartbeat is measured by using light to measure changes in your blood flow. This is done on
the top of your wrist by shining light through the skin onto the capillaries just below the skin and
detecting the changing light reflections.
The performance of the heart rate sensor is not affected by your body fat percentage or body hair.
It IS however affected by the position of the TomTom Touch on your wrist, your skin colour, skin
type and by whether you have warmed up or not.
Using the heart rate sensor
To get the best performance from the heart rate sensor, see Wearing your Fitness Tracker.
Continuous heart rate tracking is switched ON by default.
Removing the module from the strap
You need to remove your TomTom Touch from the wrist strap in order to charge it or to connect
it to Sports Connect using your computer.
To remove your TomTom Touch from the wrist strap, do the following:
1. Firmly press the top part of the module until pops out of the strap.
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General
Weight and Dimensions
