The owl is very easy to attach to the spectacle frame and budge it. The alignment is carried out quickly, as the ball joint, although sufficient, but not too much offers resistance. Is this once aligned, the light cone follows every movement of the head and at some point a falls no longer on that something was clamped to the side. This circumstance is also favored by the weight of the owl, which absolutely does not really stand. I picked up the idea of a spontaneous reviewers to use the owl also for applications on the PC and also here it performs extremely useful services. The brightness of the owl is in my opinion superior to this size.
In use, this is the way since September and so far is still the first battery in it.
An excellent product that I have already recommended two work colleagues.