eta AUTOMATIK ZEPPELIN Valjoux 7753 Bedienungsanleitung Seite 25

B
ETA A07.161
FUNCTION.
The power reserve indicator shows the winding status of the main spring.
When the hand is in position A, the watch is at its maximum winding
position and has an operating autonomy of 46 hours if it is not worn.
When the hand is in position B, the movement is close to stopping. The
watch should be worn or wound up manually (winding stem in position I),
to obtain a maximum power reserve.