
Remove dust or dirt on the lens surface using a soft or oild free brush. Remove smudges or finderprints by gently rubbing with a soft or quality oil-free tissue. You may use photographic type lens cleaner or isopropyl alcohol to wipe the lens. Always apply the fluid to the cleaning cloth (DO NOT pour on the lens).

Remove the battery cover. Insert a CR2 3V lithium battery into the compartment with the negative end facing in. TecTecTec! Laser is constructed with an adjustable eyepiece that allows you to focus the image. To focus your rangefinder, simply turn the eyepiece to the left or the right until the object is in focus.
To change the unit of measurement, hold down the MODE button for 3 seconds to alternate from METER to YARD and vice versa.
The selective targeting modes allow you to adjust the performance parameters of the lasrer rangefinder to suit in your specific situation and environment. To move from one mode to another, press the MODE button. You may choose from 3 different targeting modes:

