Really bright under the beam of a head lamp.
923190
Great product! I went on a week long camping trip to Yellowstone and the weather was rainy and windy. I used the cord to secure my tent using the additional tie-down loops. Was really surprised how bright the reflective cord was when hit with a flashlight.
1921300
When they claim that this flashlight is powerful, they're not kidding.  This flashlight on the brightest setting lights up an entire road like a headlight.  While the head is not adjustable, it's not overly important with this much brightness on tap.  The only knock against the light that kept it from five star status was that the three modes are cycled with each push of the on button.  Most flashlights require a light depression of the button to cycle the modes where this one moves to the next mode with each full press of the on button.  If you forget to cycle them before you're done, the next time you use it you might be in for a surprise when you're blasted with a super bright strobe. Other than that, it's a great light with a nice sturdy construction.
4387167
Very bright light.  We use it in a torchiere floor lamp with colored glass, and it is too bright to look straight into (through the colored glass).  But since we don't usually spend our time looking into lamps, we are able to enjoy the increased lighting the room has not had until we got this bulb.
4491381
Really bright, more of a floodlight than spot beam, hard to make them not flicker a little from the alternator on my kawasaki  mule at slow rpms, but they do make a lot of light.
3828044
This  is a realy powerful light I was realy impressed with the construction of the lamp part  it's also got this cool feature to adjust width of the beam you get what you see the straps could be a little better quality but they do the job . Overall I would recommend it.
4654752
Wow this thing is bright! I think I could use it as a headlight if it wasn't tinted red.
1438725
Very bright light.  Great under cabinet light.
4622599
It is brighter than an LED, which is what I was looking for. However, the starfish is a bit small, so the light peeks out over the top making for a very bright light at some angles.
89517
This headlight is undeniably bright. My only issue with it is that the one off switch is very sensitive, so it is easy to turn the light on without knowing it, and thus running down the batteries.
1461762
The light is quite bright.  Easy to install.
375633
Comfortable and lightweight, with a powerful head lamp
4323125
Only jocking, but this light sure is bright. With a quick turn, it will then halve it's brightness. Another turn and it starts to flash. With one last turn, it will then flash out SOS in Morse Code. Very cool. The head is also slightly bigger the the normal halogen. One thing I do notice that is annoying, is that the light emmited seems to have a stroboscopic effect, especially as I move the light around. I find this is tiresome on my eyes and would probably not purchase another one because of it. If the frequenecey were to jump past what is decernable by eye, only then would I purchase another LED torch.
598734
This is a sturdy, well-made penlight which generates a very bright beam for its size.  It has a push button on with two levels of brightness.
524394
The construction is much better than I thought it would be.  So is the light.  It is BRIGHT!  The last $12 head lamp I bought fell apart in less than 6 weeks.  This one is far superior and very, very comfortable to wear.  I use it for working on the car or on nights out on the lease.
652472
Holy WOW they weren't kidding when they said "bright."  These bulbs will shine from your dome lights to the streets.  The lumens are very nice for those wondering however I do not have a number for you.

I took a shot in the dark and was not disapppinted.
488878
Very Bright.  I used an Android App to measure the Lumens coming out of this light compared to the previous LED bulbs I was trying and this was a good and bright light bulb compared to a similar CFL bulb as well.  I wish it were slightly smaller A19 to fit into a standard enclosed ceiling light, but I had to squeeze it into the ceiling light by leaving an air gap at the top of the glass cover to make it fit.  The heatsink worries me a little bit, but since it is low wattage, I am hoping it won't be a problem in the enclosed glass and so I am okay with the air gap to make sure hot air flows out the ceiling.
3223777
I didn't think these little headlamps would be that bright, but they are amazingly bright!  You can adjust the angle of the lights as needed. The band that goes around your head is adjustable, there are different light settings such as dim or bright, and they also have a flashing red light you can use.  I was given a discount on these lights in return for my honest review, and my husband uses them at work at night and he loves them.