Polar Electro F4 User Manual page 21

Polar F4 may be worn when swimming. To maintain water resistance, do not press buttons under water.
See further information at support.polar.fi.
Water resistance of Polar products is tested according to International Standard ISO 2281. Products are
divided into three categories according to their water resistance. Check the back of your Polar product for
the water resistance category, and compare it to the chart below. Please note that these definitions do not
necessarily apply to products of other manufacturers.
Marking on Wash
the case splashes,
back sweat,
raindrops
etc.
Water
resistant
Water
resistant
30m / 50m
Water
resistant
100m
Bathing and
swimming
x -
x x
x x
Skin diving SCUBA diving
with snorkel (with air
(no air tanks) tanks)
-
-
x
Customer Service Information 21
ENGLISH
Water
resistant
characteristics
Splashes,
-
raindrops etc.
Minimum for
- bathing and
swimming
For frequent
use in water
-
but not SCUBA
diving