5.0 HEART RATE MODE –
PRECAUTION
Front iew
Back iew
[S1]
ront contact
[S2]
ack contact
1. A heart rate contact [S2] is located
on the back of the watch. It must be
firmly contact with the user's skin dur-
ing measurement.
2. DO NOT take heart rate measure-
ment when diving or under water.
3. Clean the [S2] occasionally by apply-
ing a few drops of water and wipe it
dry with a paper towel to remove any
residual grease.
4. DO NOT use hand cream; it will
insulate the signal between the skin
and the sensors.
5. Clean skin and fingers with soap and
water for better signal transmission.
6. DO NOT use the fingertips where
the skin is dry and thick. For those with
extremely dry
skin, moisten fingers and wrist with
tap water or apply a conductive gel
may help.
7. Hold the watch firmly when taking
measurement in motion.
8. During measurement, avoid any
sudden and fast movements as it will
create undesired muscle noise and
thereby may disturb the measurement.
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