•When you are wearing the watch, make sure that its auto light switch is turned off before riding on a bicycle or operating a motorcycle or any other motor vehicle. Sudden and unintended operation of the auto light switch can create a distraction, which can result in a traffic accident and serious personal injury.
To turn the auto light switch on and offIn the Timekeeping Mode, hold down L for about three seconds to toggle the auto light switch on (A.EL displayed) and off (A.EL not displayed).
•The auto light switch on indicator (A.EL) is on the display in all modes while the auto light switch is turned on.
•The auto light switch turns off automatically whenever battery power drops to Level 4 (page
•Illumination may not turn on right away if you raise the watch to your face while a barometric pressure or altitude measurement operation is in progress.