after many tests I have managed to have a consumption of less than 0.3 an hour.
Wach original face of digits, no seconds, only day and battery
No weather widget, and with original data fields on bike and ride.
My consumption of GPS and Galileo is approximately 8% an hour, taking into account that I have the ant + automatic transmission to see the pulse on my GPS etrex 35
If I use the analog dial with a second the consumption rises a little more, I do not have it very calculated, but less than 0.5 an hour
it is a shame that the content of the store has in most cases a very high battery consumption