This Bicycle Light has already served me well: - It is extremely high luminosity. In normal Begtrieb one needs the enormous luminosity not necessarily. Only in unknown terrain, it can be important when one similar example for orientation farther way signs, house numbers want to illuminate. - With the included charging cable allows the lamp very comfortable charging without removing the batteries. A small charge lamp informed about the charging process. - The processing affects a total of very high quality and also the operating instructions is good. - The only drawback: I prefer mounts that you can screw on the bike. This is when this lamp is not possible (readily).