First, the battery compartment doesn't stay latched, so the light won't work half the time unless you hold the sides of it and press inward. If you can get it to stay on, it has a very limited range for the angle of the light shining in front of you. Most people will want the light to shine slightly downward in front of you, so that while you're walking or working at night, it is in your field of vision. This light won't go down far enough, so you have to tuck your neck and hold your head down or it just shines into the sky. There are also extra LED's on the under side, that I suppose are supposed to be some kind of indicator for which setting the light is on. These are not necessary and only serve to drain the useful light's battery faster. They are also in your field of vision, directly above your eyes, so if you're trying to see at night, you get little LED lights glaring and blinding you. These LEDs also stay on after the main lamps are turned off, so if you don't double check the awkward rotating on/off switch, they will run the battery dead while the light is turned off.
I bought this lamp because it boasted high lumens and I thought, being from Coleman, it would have practical and dependable design. I am definitely dissatisfied and wish I'd just returned it right away. It was more expensive than other headlamps and it's performance does not live up to the price.
There is ONE good use for this thing... It has red and blue LEDs, and when you rotate the switch back and forth really fast, you can make it flash red, white, and blue; so it looks like the police... Not saying to impersonate an officer, but it has helped in pranking my old room mate!