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POOL LENGTH SETTING
It’s important that you choose the correct pool length, as it affects pace, distance and stroke calculation,
as well as your SWOLF score. You can choose the pool length in pre-training mode from the quick menu.
Press LIGHT to access the quick menu, choose the Pool length setting and change the previously set
pool length if necessary. The default lengths are 25 meters, 50 meters and 25 yards, but you can also set
it manually to a custom length. The minimum length that can be chosen is 20 meters/yards.
When using the Swimming/Pool swimming profile, check that the pool length is correct. To change
the pool length, press LIGHT to access the quick menu, choose Pool length setting and set the correct
length.
OPEN WATER SWIMMING
When using the Open water swimming profile, the watch records your swim distance, time and pace,
stroke rate for freestyle as well as your route.
Freestyle is the only style that the open water swimming profile recognizes.
Pace and Distance: Your watch uses GPS to calculate pace and distance during your swim.
Stroke rate for freestyle:Your watch records your average and maximum stroke rates (how many
strokes you take per minute) for your session.
Route: Your route is recorded with GPS, and you can view it on a map after your swim in the Flow app
and web service. GPS does not work underwater, and because of this your route is filtered from GPS
data acquired when your hand is out of the water or very close to the water surface. External factors
such as water conditions and satellite positions can affect the accuracy of the GPS data, and as a result
data from the same route can vary from day to day.
MEASURING HEART RATE IN WATER
Your watch automatically measures your heart rate from your wrist with the new Polar Precision Prime
sensor fusion technology, offering an easy and comfortable way to measure your heart rate while
swimming. Although water may prevent the wrist-based heart rate measurement from working
optimally, the accuracy of Polar Precision Prime is sufficient to allow you monitor your average heart rate
and heart rate zones during your swimming sessions, get accurate calorie burn readings, your Training
Load from the session and the Training Benefit feedback based on your heart rate zones.
To ensure the best possible accuracy of your heart rate data, it’s important to wear the watch snugly on
your wrist (even more snugly than in other sports). See Training with wrist based heart rate for
instructions on wearing your watch during training.
Note that you can't use a Polar heart rate sensor with a chest strap with your watch when swimming
because Bluetooth doesn't work in water.