The Terralux Lightstar 220 I received is great on high but the low setting, which claims 100 lumens, is closer to 40 based on comparisons with other lights I have. This is also reflected in claimed run times of 1 to 1.5 hours on high and 6+ hours on Low. Most other flashlights have a much more linear relationship between claimed output and battery life.

It is a very rugged appearing 2 AA battery flashlight with plenty of light output on high but the low setting is very dim in comparison to other flashlights I have compared it to with claimed outputs in the 60 to 100 Lumens range. Not sure that my sample is typical but based on the claimed run times I suspect that it is.