Vantage M/Vantage V GPS settings
From firmware version 4.0.11 onwards you can change the satellite navigation system your watch uses in addition to GPS. The setting is located on your watch in General settings > Positioning satellites. You can choose GPS + GLONASS, GPS + Galileo or GPS + QZSS. The default setting is GPS + GLONASS. These options give you the possibility to test different satellite navigation systems and find out if they can give you improved performance in areas covered by them.
GPS + GLONASS
GLONASS is a Russian global satellite navigation system. It is the default setting as its global satellite visibility and reliability is the best of these three, and in general we recommend using it.
GPS + Galileo
Galileo is a global navigation satellite system created by the European Union. It is still under development and is estimated to be ready by the end of 2020.
GPS + QZSS
QZSS is a four-satellite regional time transfer system and a satellite-based augmentation system developed to enhance GPS in the Asia-Oceania regions, with a focus on Japan.