Its hard to say enough nice things about this light. I've used it for a week now riding in light and heavy rain, under normal street lights as well as an unlit MUP and the light seems to stay dry and hold up well. I must say I almost never use high power because it seems like overkill. Maybe in a heavy rain it could be necessary, but otherwise low and medium seem adequate. I did actually have a jogger comment the other day that he thought I was a car. I am looking around for a suitable black strap to run through those 2 rings to keep things secure. Right now it is great, but I know from experience that velcro can lose its grip as it gets older.