The Quick Lock Crown (QLC) developed by Oris is easier to release than the screw-down crown, as it has a bayonet catch rather than a thread.
- Press the crown lightly against the case and turn it counterclockwise briefly until the crown is released.
- The crown is now in position 1 and can be operated.
- After operation, the crown must be locked again by pressing it against the case and turning it clockwise briefly until it locks.
The watch is only water-resistant to the specified depth when the crown is closed.