IWC Schaffhausen INGENIEUR CHRONOGRAPH Mode D'emploi page 30

— 3 0 —
– Push the crown back to position 0 to start the movement.
– Now push the crown to position X and secure it by simultan­
eously turning it to the right.
Important: Although the watch is water­resistant in positions 0,
1 and 2, the crown should always be screwed in again for normal
use (position X).
R E A D I N G T H E T I M E I N T H E D A R K
Both the dial and the hour, minute and seconds hands of your
watch have luminescent elements that allow you to read the time
effortlessly even in total darkness.
I N G E N I E U R C H R O N O G R A P H