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Showing the dot is easy - 50-100mW will make for an easily visible dot in daylight.
A visible beam is another matter entirely - you'll need 1W to 1.5W to see that.
Now you realize that anyone looking at the laser's aperture will be able, easily, to tell which direction the beam is travelling. As for being a visible beam in full sunlight you will have to spend lot's of money in the denominations of Benjamins to accomplish the goal. In short have deep pockets.I am looking for a laser that will show up in daylight outdoors.
It doesn't necessarily have to show a dot, but the beam at least needs to be visible to indicate the direction it is pointing in.
Is a 5mw green pointer enough?