CITIZEN MG0000 - Manual (Page 19)

Dive Mode
This mode is used for diving. The watch automatically switches to the dive mode when a
dive is started, and displays current water depth, dive time and other data required while
diving during the course of a dive.
Surface Mode
In this mode, the watch displays the elapsed time since completion of the most recent
scuba dive and the amount of time flying in an aircraft is prohibited (maximum 24 hours)
(no fly time). The surface mode is no longer displayed once the no fly time has elapsed.
Infrared Communication Mode
This mode is for communicating with a PC or communicating between watches using the
infrared communication function.
Low power mode (Temporally function)
The low power mode is a temporally function for powering the watch with the minimum
amount of current consumption. The watch automatically switches to the low power mode
when it has become insufficiently charged.
Do not wear the watch in the low power mode under normal circumstances.
Although the watch can be manually switched to this mode by operating the
buttons, all functions except for time and date display and correction do not
operate. In addition, the watch cannot be switched from the low power mode
to the dive mode.
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