i've got a TK-45 and i'm well amazed at it's output.
the only downside is the beam is more of a spread than a spot and it cannot be adjusted/focused.
that said, the low power mode is plenty of light for most purposes (i find anyways) and the batteries will last for yonks on that power setting.
crank it up to 740 Lumens (or thereabouts) and battery life plummets to an hour and a half.
lots of light though.
the only downside is the beam is more of a spread than a spot and it cannot be adjusted/focused.
that said, the low power mode is plenty of light for most purposes (i find anyways) and the batteries will last for yonks on that power setting.
crank it up to 740 Lumens (or thereabouts) and battery life plummets to an hour and a half.
lots of light though.