Leupold GX-1i3 Operating Instructions Manual page 15

The GX-1i and GX-2i series rangefinders feature PinHunter 3 Laser Technology,
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which will always provide you the distance measurement to the closest object ranged .
When you press and hold the MODE button for at least 2 seconds then release
it, the Quick Set Menu is prepared for navigation . To set or activate a mode, you
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must advance to that function by pressing and releasing the MODE button until that
function is displayed . To activate a mode, press the POWER button, the icon will
display steadily and the word "On" will appear in the bottom portion of the display .
Pressing the POWER button again will turn that mode off; displaying the word "OFF"
in the bottom portion of the display . Each subsequent depression of the POWER
button will toggle that function between on and off .
NOTE: Allowing the rangefinder to sit idle for 30 seconds will cause an automatic
power-off, saving all selections. If additional modes require activation/deactivation,
simply press and release MODE to continue through the Quick Set Menu. Pressing
and holding MODE for at least 2 seconds at any time will exit the Quick Set Menu,
save all previous changes, and prepare the rangefinder for immediate use.
Hold POWER and MODE simultaneously for at least 10 seconds to reset factory
settings .
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