I find them highly effective for target shooting but it s easy to depend on them rather than good sight alignment and control.
Laser you can see in daylight.
Laser distance measure generally has a laser output of less than 1mw class 2.
So one device s laser brightness is pretty much the same as another.
It s basically the same principle used by the laser card but instead of creating a light filter in a small localized area it creates a light filter across your entire field of vision.
Lasers red or green are for dark targets in marginal light.
Neither is visible enough in daylight for rapid acquisition.
Outside in full sun you will not be able to see the laser dot more than about 10 or so meters 30 feet.
Laser glasses effectively filter your vision to limit the light you see making it easier for you to identify your laser beam in daylight.