Citizen E87 Manual page 7

Before using this watch
◆ How to use a specially designed crown/push button
Some models are equipped with a specially designed crown and/or push button to prevent
accidental operation.
Screw down crown and screw down push button
Unlock the crown prior to operate your watch.
Screw
down
crown
Screw down
push button
6
Unlock
Rotate the crown
counterclockwise until it
releases from the case.
Rotate the locking screw
counterclockwise, and
loosen until it stops.
Lock
Push the crown in to the case.
With gentle pressure towards
the case, rotate the crown
clockwise to secure it to the
case. Be sure to tighten firmly.
Rotate the locking screw
clockwise, and tighten firmly.