I tried to evaluate my Zeblaze Thor Pro 3g when put the Always on display toggle turned on (thanks to @Eric_Crochemore who had made this option available on universal launcher), I also set the brightness to the lowest level, bluetooth connected with wiiwatch.
For a Zeblaze thor pro which has a transreflective screen, using the lowest brightness display setting, is not a big problem wether for indoor or outdoor use, even under direct bright sunlight.
The result was, my watch battery went down from 79% to 30% in 6 hours. What interesting is, my screen on time could reach 7h 56% of all battery consumption. While put the Always on display toggle off, my screen on time, could only get 55 minutes on 24h use, and the rest of time taken by watch idle and some very small amount taken by universal launcher.
So, did the “always on display” toggle made the screen less using battery? Will put this toggle on and manually turn the screen off after every use could prolonged the battery life?