Was quite surpised when I received the lamp on the second day after the order. The seller is fixed. For lamp: with a product in this category you have to first expectations a little run screw what was clear to me from the beginning. 2400 lumens is a fantasy value may be reached at a lupine, which is higher by a factor of 10, but also in processing and price. The 4800mAh battery are after full charge in just 2900mAh, the light output at about 1100 lumens (the value was, however, not measured by professionals). If you treat the battery well, are just 2.5 hours quite in it. The best thing: an original Magicshine battery MJ 828 Adjusts the connection of the lamp. The bulb is small and lightweight, can be easily attached to the handlebar and also battery and bag disturb not really on the stem. Despite the misleading description I got what I expected - at the price unbeatable performance. The first trips by mountain bike through the rain and mud has survived intact the lamp; If it sees a year, I am more than satisfied.