The RIDICUlight is crazy bright.  How crazy bright?  2600 lumens on the high setting!  If you are looking for A LOT of output but still want a compact flashlight then this is a great choice.  
 
The RIDICUlight has several output settings.  The sequence is low-medium-high-strobe-SOS.  The turbo setting can be reached at any time by pressing the power switch twice very quickly.  If the flashlight starts to get too hot in either the turbo or high setting, it will automatically transition to the next setting down.  To turn the light off, simply hold the power switch for 1/2 second.