Philips DL8790/10 - Manual (Page 67)

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Problem Possible cause Solution
Blood flow in the skin can
be temporarily reduced
when going outside when it
is very cold as more blood is
directed to the body’s core.
Try wearing long-sleeved clothing
to cover the watch and starting
the measurement inside. Disregard
inaccurate measurements during
the first couple of minutes and
provide some time for the blood
flow to the skin to adjust to the
exercising conditions.
ENGLISH