For this mini-housing is an absolutely solid light. The reflector can be expected this already. The 30 lux are sufficient (more you can probably not even get out of this miniature). What makes the light this lamp so good? The Lichtkegel- and small with this reflector. At close range, it is however very narrow. The support is great. Mounting without tools with a rubber band. That's actually mostly shaky, but in the few grams of weight is absolutely no problem. We can clamp the holder quickly to another Fahhrad. They can buy more and you can also umbasteln very good. What is a light bulb super? Exactly - the helmet. Here you can the attachment piece by 90 ° (which can be seen only when unscrewing the bracket). Then the bracket on the helmet and the lamp has a super light angle despite missing ball joint. Granted, the rubber is then somewhat tight but it's still pretty good. What is now this lamp a disaster? The starting logic. Who has thought along because of Owleye? Something's got to be better for 50 easy! There is no Power On. The worst part: If you drive in the dark has to choose a brightness level for switching back and forth is not in it. Then it gets dark in the middle. Ko Criteria! This urgently needs to rework Owleye. Very bright, bright, from ... nothing is for the night. If Owleye the Deactivating nachbessert by pressing and holding, I deliver without hesitation after the 5th star. A drawback, however, there still: there is absolutely NO seiteliche visibility. It is therefore only seen from the front. Too Bad. Here again a half star deduction. Overall, this lamp is probably ideal for racing. Small, light and narrow the beam at close range does not interfere. In the pictures you will find a comparison of the light cone of 3 lamps of the same price class (40 to 55 euros). 35 for the Owleye it would have done in my opinion. The price is probably here in size and weight. For 50 then with better starting logic and higher quality housing.