Day: quickset by setting hands backwards
f = 28800 A/h
power reserve 42h
Mainspring / battery
1.30 x 0.60 x 0.15mm
The automatic gear is integrated into the movement, instead of attaching it to a manual-wind calibre as usual.
Together with indirectly driven minute and second this leaves in the center space for a rugged rotor bearing, despite the low profile.