Citizen Eco-Drive b740 Instruction Manual page 43

* The watch cannot be switched to the chronograph mode from the dive mode.
* If the function hand or/and mode hand do not reset to their respective "0"
positions when the watch enters the chronograph mode or the chronograph is
reset, adjust the hand(s) to the "0" position referring to
"9. TROUBLESHOOTING".
* The mode cannot be changed while the time is being measured in the
chronograph mode. If the mode is changed while in the stop state of the
chronograph mode, then indication is cleared.
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