In practice, you can actually see something good on the small mirror, if you have fixed the mirror itself only once. You must be of equal abandon the idea that one can like a large car mirror just take a quick look in the direction and know immediately what is behind a lot; that does not work. The mirror must be seen relatively accurately, so you have to look down, fix and then "see", depending on the orientation of the mirror, the relevant section. That takes quite one or two seconds. For city driving, I think that's not a good solution, there simply would have more mirror surface be present to be able to see more quickly. For quieter stretches, which depend more on the casual observation of the approaching traffic from behind, as on highways, for example., But this is a very good solution.
The installation is very simple: the mirror is fixed depending on the handlebar diameters with a more or less spacers, pushed instead of the end plug in the handlebar and by a screw. Schleierhaft is me with this, which is why the manufacturer installed an ancient longitudinal slotted screw here, instead of a Phillips or even better an Allen screw. This is a little annoying, but the screw should be replaced quickly when it really bothers.
A star I pull from for to good adjustability. It is definitely laudable that the mirror can be folded and easily rotatable. But he must be very precisely aligned to actual street to show behind the bicycle. However, once one comes close to the mirror goes away or twists and again one sees only the sky or landscape. Since the adjustment is actually counterproductive.
Postscript: Actually, it's obvious, but I noticed it, of course, only during a weekend tour to: with full panniers on the carrier you see nothing directly behind him. That should given the size and position of the mirror but not surprising. So I'm considering now but to mount a gooseneck mirror. Especially with a full load I turn around reluctantly so far that I can see right to the back. It is not getting any younger ...
