As another reviewer of this product mentions, it has several queer flaws. Yet, I'd buy this thing just for the cute screwdriver.
The lasersight has a very simple appeal but due to the very small size, this does not matter. The actual laser is definitely a laser but the light does not seem to be too accurately bundled. It does work well even up to a long range (at night).
I bought two of these. One of them had slight issues when the wire to the remote controller was moved (would often disconnect).
Operating it is simply pressing the button. No toggling, just holding.
Below an image of how I installed it.