Training in general and heart rate measurement during training

Q7: How long does it take until completion of GPS reception for initiating running measurements?
A7: It takes anywhere from about 30 seconds to 2 minutes, depending on environmental conditions. It may take longer if the reception environment is poor. As long as you are connected to a smartphone, GPS acquisition time can be shortened because GPS orbit information is read in advance. Turn on [Settings]-[Watch]-[GPS]-[Automatic Ephemeris] before use.