the light be great when its working at full brightness . it will frequently go to a dimmer version of itself and I have to turn it off and on again to attempt to get it to settle back to full bright . it occasionally turn off right when I need it to be on . tighten the battery enclosure help a bit but not completely . I expect a lot better from MAGLITE . about 3 week after buy this light I find about $ 8 cheaper at one of the home center .