After reading the description I had pretty high expectations, but these were outweighed by the benefits of the product by far. The light is extremely bright for a headlight of this power, the light color corresponds to about a xenon headlight, uniformity of illumination is excellent. Careful adjustment of the tilt angle to the street level is recommended - Setting quiet little flat to the road - then you see more in the distance and close range is still bright. Impressive also the parking light function: The manufacturer specifies four days storage capacity, but this is clearly an understatement. After 20 minutes and four weeks of non-use of the wheel of the headlights still lights up when you turn it. The switch has therefore also in side runner dynamo makes sense because even in the garage so you have light on the bicycle.