CALIBRE ETA 251.262
Pushers:
A Chronograph start/stop
B Split timing, zero reset
Timepiece indication:
C Hours
D Minutes
E Seconds
F Date
Chronograph indication:
G 1/10th of a second counter
H 60-second counter
I 60-minute counter
J 12-hour counter
The crown has 3 positions:
1 Normal position
2 Time zone adjustment back and forth, date setting
3Hour and minute setting, stop second



CALIBRE ETA 251.272
Pushers:
A Chronograph start/stop
B Split timing, zero reset
Timepiece indication:
C Hours
D Minutes
E Seconds
F Date
Chronograph indication:
G 1/10th of a second counter
H 60-second counter
I 30-minute counter
The crown has 3 positions:
1 Normal position
2 Time zone adjustment back and forth, date setting
3 Hour and minute setting, stop second