After my old lamp had given up the ghost on the bicycle B & M Lumotec was recommended to me. After rapid delivery and ease of assembly (with the usual tool) I was very impressed how much light can be such a bicycle lamp - which helps on the one hand my point of view (on the tree-lined paths along the dim morning) and I'm going to be seen by others better. So far no problems with low temperatures, snow, rain, humidity, etc. So to me there's a big "like!" or 5 stars