Vintage watch Citizen 8945-087631, alarm chronograph, timer.

100$
Digital and analogue clocks. Japan. 80s, (not sure). Fully working hours, everything works. Very good condition (The coating on the legs is erased). Mineral glass, clean.
Time, alarm calendar, timer chronograph. Other functions are not clear to me. 2 buttons on the left and 3 buttons on the right.
Case diameter 40 mm. Thickness 11 mm. Under the strap 20 mm. Water resistance 10 bar (100 m.)
A rare watch, a rare condition.