This is the second one I have brought the first one is on my old MTB which I use for work as I have an early start in the mornings its awesome powerfull waterproofs ( never had any problems in the wet!) I brought a second one for my new MTB which I use mainly to go out with friends as I like to have lights on my bikes( lights on each as you just have to get your bike & go saves taking lights off one bike to.put on another you just wast time faffing) a brilliant light and so quick to charge saves£s on batteries love it thank you