Polar Electro RS400 User Manual page 3

Basic settings
How to change my personal data?
• Settings > User
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"Weight" (kg)
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"Height" (cm)
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"Birthday" (dd.mm.yy)
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"Sex" (Male)
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"Activity" (Top)
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"Heart Rate max" (max)
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"Heart Rate sit" (at rest)
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"VO2 max" (50-60)