![background image](http://html1.mh-extra.com/html/conrad/speedmaster/speedmaster_operating-instructions-manual_2653981029.webp)
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d) "ZONE" function (training zone)
Press the "SEL" button (C) in "HRM" mode until "ZONE" is displayed at the bottom.
Heart rate
Zone display
Upper limit
Training zone
Percentage display
Lower limit
Alarm symbol
For training zones "1", "2", and "3", the limit values are calculated automatically based
on the entered data (height, weight, age; see chapter 12. b), as displayed below. For
training zone "U", the limit values can be set manually.
Example for training zone 2, age 35, heart rate 120-148