No question

this plus this

100 Lumens for 4 hour run time with two AA batteries, which is plenty of light on a partly-lit street at night (some street lamps). Great visibility on well lit streets using the dimmer options for runtime of 10hrs (wow).


Option to nearly double the light output to 175 lumens with a runtime of 2.4hours which is enough to ride about 10-12hph on a completely dark street. You won't find that kind of light for less than $170 anyplace else that I have found. I have run mine at max (175 Lumen) setting for 45 minutes two days in a row without a recharge or drop in light output.