How do I switch the laser between yards and meters?

Before turning the rangefinder on, hold the POWER button for 5 seconds to change units between Yards and Meters. The rangefinder will vibrate and cycle between Yards and Meters. Release the button when the selected unit appears on the screen.

The rangefinder is in yards when Y is displayed next to your distances. The rangefinder is in meters when M is displayed next to your distances.