Positioning satellites

Your watch has built-in GPS (GNSS) that provides speed, pace, distance and altitude measurement for a range of outdoor sports, and allows you to see your route on map in the Flow app and web service after your session. The watch uses GPS, GLONASS, Galileo, BeiDou and QZSS systems simultaneously for maximum accuracy around the globe. By default, the watch also utilizes dual-frequency GPS for improved positioning accuracy especially in difficult use conditions. Alternatively, you can use a power-saving single-frequency GPS mode on your watch. Single-frequency GPS mode does not give as accurate results in difficult use conditions, but it will improve the battery lifetime during exercise. The setting is located in General settings > Positioning satellites. Choose Better accuracy (dual-frequency GPS) or Power save (single-frequency GPS).

Assisted GPS

The watch uses Assisted GPS (A-GPS) to acquire a fast satellite fix. The A-GPS data tells your watch the predicted positions of the GPS, Glonass, Galileo, BeiDou and QZSS satellites. This way the watch knows where to search for the satellites and thus makes defining your initial location faster and improves the accuracy of the positioning data.

The A-GPS data updates once a day. The latest A-GPS data file is automatically updated to your watch each time you sync it with the Flow web service via FlowSync software or via the Flow app.

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 > 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.