Consistent bright light.
583751
This is my second headlamp like this.  I've used mine for four dark winters in Alaska and have never been disappointed.  I'm replacing mine because scratching over the lens has dimmed light output a bit.  Very economical on batteries, easy to use with gloves.  I thought the hinge that allows the light to tip might fail but it has performed very well.  Good product in my experience.
4156727
Very nice and bright light.  Light dims to various degrees of brightness. This light replaced a two 1141 bulb fixture.  Haven't used it long term yet, but will once camping season gets going.  The only reason I gave four stars rather than 5 is because I'm not sure how well the plastic frame will age over time, would have preferred metal fixture if possible.
4543288
Very bright light. Bright enough for daytime use.
The usb rechargeable battery seems to last a very long time. At least as long as the manufacturer claims and longer than many of my other dimmer LED rear lights.
My only complaint is that if you want to run it on the dimmer setting it only runs in a steady on mode, no flash.
2414565
Compact yet bright lights for both forward and behind directions.  Strape allows for very secure mounting but requires patience to install.
3217034
Nice and bright.  I've had this in service for about 3 months now without any problem.
3889732
Good price and works very well.
This is also a bright light
4700743
The light is clear and without flicker. It pops on right away without the delay I experience from some LED bulbs. The bulb itself feels solid in the hand and not cheap. The color range of the bulb is printed on the base, but its small enough that some folks may have difficulty reading it.

I'm not a big fan of natural light bulbs, they never seem to quite get natural light correct, could be that it's more of a scientific natural than an actual outdoors natural.  Consequently I only use natural light bulbs in my photo lab where I need to color balance everything for a reliable result from a professional printing lab. It looks on-par with some of the bulbs I've purchased at the photo supply store so that makes me think it would be reliable, but time will tell if it keeps its color correctly over a long period of time or if it blues like some LED competitors.

After the light has been on for a few hours the glass part of the bulb is still cool enough to touch though the body is too hot to comfortably touch. I really appreciate this, some light fixtures are made for newer bulbs and CFL and some LED brands get hotter than I'm comfortable with to the point of discoloring the casing.

It's listed as non-dimmable but I have tested it and found that it can do 50% (lower and it either doesn't come on or flickers heavily). I don't know what extended use at a dimmed level will do to the life expectancy of the bulb.

Full disclosure: Vivid sent me two bulbs for testing.
1098866
I love how bright the light is. I haven't had them long enough to tell how long they last, but the brightness alone makes it worth the purchase.
4637757
Been installed about a month.  I used them to replace bulbs in 7 Malibu bollards and 3 Malibu spot lights outdoor in coastal San Diego County.  They are as bright or brighter than the incandescent bulbs they replaced.  The illumination from each LED bulb is very consistent too so the lights farthest from the transformer are the same brightness as the ones at the beginning of the wire run.  Would definitely buy them again.
4796161
Steady warm light. I ordered 2700K PAR20 and color is good.  Dimensions are accurate and work in up firing can light.
2184319
These little lights pack a punch.  Their color isn't as warm as the 50 watt halogens they replaced, it's closer to white, but they are brighter than those halogens and light the area up better than the old spotlights that were in there.

The dimming function works well, not quite as wide a range of brightness as halogen bulbs would have, but that's to be expected.  At minimum brightness they provide adequate minimum lighting for nighttime use (for walking around without bumping into things, etc).  Also, when dimmed, the bulbs do not have any sort of buzzing sound.

The bulbs have a nice heft to them and seem to be well-made, and all six of my bulbs worked without issues.  I did not see any sort of quality defects in the manufacturing of the bulbs, each looked consistent.

I had no issue getting these to fit in my fixtures, which are tight to begin with, so I think they will work for most fixtures.
4322940
Performed as expected, magnet strong enough to hold light in place. The light its bright.
1461972
These are bright and long lasting. I've had these for close to 6 months and they are going strong.
2042213
Bright lights. Last along time.. some them are dead in the bag but so many for so little it doesnt really matter.
2196608
Good product. The brightest setting turns itself of. Note- this near a corner in the room. Works as I intended.
1375453
The lights are nice and bright stays on for a long time.  the set is doing fine so far, hope they keep going strong.
1986112
I keep this light permanently on the bike and ride daily through all weather.  Light is reliable and batteries last quite a long time 6+ months.