Used this light for responding to fire/ems calls. I am amazed of the output of the light, intensely bright during the day and night, definently worth the money for the light. The only issue I had with the light is mounting. I used suction cup style with this light for a little, didn't really like it. I then switched to the 3M mounting strips, mounting it flush with the top visor on the windshield, it worked well; after about two months it fell down, I then tried mounting again with 3M strips and it would not stay, I then used mounting adhesive glue, it also fell down after about three months. This might just be user error, but I have nothing bad to say about the quality and output of the light.