I use this light on a bike that I stand in the city. So I have it twice a day to solve and fix again. Na ca two months ripped the rubber mounting. Furthermore, the batteries incorrectly proportioned. They have not even held a winter season. I have taken them in the week daily approximately 15 minutes to complete and after about 1.5 months they were empty. Unfortunately, the batteries are also very expensive. The lamp as such serves its purpose, but I can not make any recommendation to buy the bottom line.