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A-GPS expiry date
The A-GPS data file is valid for up to 14 days. Positioning accuracy is relatively high during the first three days, and
progressively decreases during the remaining days. Regular updates help to ensure a high level of positioning accuracy.
You can check the expiry date for the current A-GPS data file from your watch. Go to Settings > General settings > About
your watch > Assisted GPS expires. If the data file has expired, sync your watch with the Flow web service via FlowSync
software or with the Flow app to update A-GPS data.
Once the A-GPS data file has expired, more time may be required for acquiring your current position and the positioning
data accuracy may decrease.
For best GPS performance, wear the watch on your wrist with the display facing up. Due to the location of the
GPS antenna on the watch, it is not recommended to wear it with the display on the underside of your wrist.
When wearing it on the handlebars of a bike, make sure the display is facing up.
Back to start
The back to start feature guides you back to the starting point of your session.
To use the back to start feature for one session:
1. In pre-training and pause modes, choose Settings to access the Quick menu.
2. Choose Back to start from the list, and choose On.
If you add the back to start training view to a sport profile in Polar Flow, it is always set on for that sport profile and it does
not need to be switched on every session.
To return to your starting point:
l Keep your watch in a horizontal position in front of you.
l Keep moving in order for your watch to determine which direction you are going. An arrow will point in the direction
of your starting point.
l To get back to the starting point, always turn in the direction of the arrow.
l Your watch also shows the bearing and the direct distance (beeline) between you and the starting point.
When in unfamiliar surroundings, always keep a map at hand in case the watch loses the satellite signal or the battery runs
out.
Race pace
The race pace feature helps you to keep a steady pace and achieve your target time for a set distance. Define a target time
for the distance - 45 minutes for a 10k run for example and follow how far behind or ahead you are compared to your pre-
set target.
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