Not bright in more ways than one
591651
This light is not very bright which defeats the whole purpose of having something to light your way.
It feels cheap.
The battery compartment's tab to open it feels like it will snap off after a few times opening the battery compartment. There are two blotches of yellow gunk and streak marks inside the clear view lantern part that is inaccessible to be able to be cleaned off.
It seems to be some kind of glue.
The care and detail in making these lights, at least the one I received, is minimal at best.
1761388
The light is smaller than I thought it would be.  The actual "light" emitted is not at all as much light as I was hoping for. This is definitely NOT a "spot-light". It emits a very low beam from whay I think may be a series of diodes.  For the money, I was dissappointed, to be honest.
1172095
I thought I might have wanted a higher lumen light? NOT
Plenty bright for any foreseeable situation
969592
not very bright as stated. I have a smaller and cheaper flashlight which is better than this one.
1598169
These aren't bad if you only plug in one.  Each light added to the chain makes them all dimmer.  The problem is that they are wired in series, each extra light drops the available voltage and reduces the light output.  They should be wired in parallel so that they always get the same voltage but require more amperage with each additional light.

For my house I needed a set of three and a set of six.  I first got the set of three and the reduced light output isn't as noticeable.  When I got the set of six installed it was very obvious that they were not as bright as the set of three.  When I disconnected the extra five it was also easy to see the remaining light get brighter.  To counteract this I plan to replace the power supply with a higher voltage unit to reclaim the lost light output.

This functionality should be noted in the item's description or corrected at the manufacturing level.

Apparently the RGB controller couldn't handle the extra voltage as the lights became noticably dimmer after a couple of days with the 15v power supply.  Since I just wanted white light anyway I have bypassed the controller all together so that they are always white. They are plenty bright even with a 12v power supply leading me to believe it is the controller causing them to dim as lights are added to the chain.
4341827
Not bright at all.  I placed both, then one LED and one regular.  I think the regular was better.
3980834
Only one side lights up, and the lights flash instead of a constant light.  Not only that, but the flashing is intermittent too...no rhym or reason to the flash. Some lights are brighter than others too... Not impressed.
1554694
I bought these to add light to a closet. Some reviews stated that these were incredibly bright. Unfortunately, this was not the case for me. I installed three of them to a long closet, and it didn't make much of a difference. It's better than nothing, but don't expect it be well lit. These may be better for a small cupboard or something. On a scale of 1-10 with 1 being a night light and 10 being outdoor floodlights, this is probably a 3. Not sure what the other reviewers were talking about. Maybe I got a faulty product.

In the pictures, you can see in pitch black they might be helpful, but with ambient lighting they don't add too much. Again, these 3 lights in one closet.

Also, they can't really be attached to a ceiling to face downwards, except maybe with double sided tape....but if you do that, it'll make it very difficult to change out batteries as the cover is on the back. I had to hang them on a wall with a nail, so the light gets blocked by clothes. This isn't a terrible product....the lights are just really dim and can't be expected to light up much more than a small space.
2877192
Not quite ultra bright, it could have be better. This one is better: https://www.amazon.com/gp/product/B00SJNM6R0/ref=cm_cr_ryp_prd_ttl_sol_46
2397625
poor light , not bright ............wasted money
1580672
The bulbs arrived OK, but they are not as bright as what you would expect for 100W, not close to a standard 100W incandescent lamp bulb.  The glass envelope of the bulb does not look as pictured. it is shorter.  By contrast, they were brighter than the previous waste of money on the Ulight  5-6W LED bulb which clained equivalence to a 60W incandescent, but it was was terribly dim and flickered (unusable):  https://www.amazon.com/dp/B06X9TLF5M/ref=cm_cr_ryp_prd_ttl_sol_2.

By contrast, the the Q100CL/MC bulbs work fine, and they were packed well, but I was disappointed in the brightness as I am looking to throw some light into the room from this fan fixture.
1261468
I was expecting alot more out of these lights. I bought them because they have a sleek design and LEDs don't use alot of power. However the light they give off is a very sharp white and there isn't that much of it. My big Larry flash light is signifigantly brighter and it runs off a couple AA batteries. I would not buy them again.
773520
It is nice that this has two heads and that each has multiple light levels, but this unit is not at all good for me. The "warmth" of the LEDs is not nearly enough to qualify for warm light (which is important because I want to use it to read before bed). My bigger complaint is that with more than one LED turned on you get shadows where the lights cross over each other, and it's very annoying. My husband can see it but it doesn't bother him and he doesn't think it's significant. I also wish the lowest light level were a little lower.
2851605
Might work as a mood light, but way too dim to actually light up even a small space.
1726301
I really wanted to like this light, but it's just not very bright. I would suggest getting one that has a few more lumens. I put this next to a 3000 Lumen light, and a 800 lumen light. It's hard to tell which is brighter next to the 800. I wanted to use this for a small room, and it just wasn't doing the job for me unfortunately. Also, when taking apart this light, it got stuck and would not come apart.
1656202
Bought these a couple weeks ago, wired them in and thought they were not very bright. Wired straight to 12V to see how bright they would get and are just not very bright. Pass.
544717
Just so-so. The light is not really bright enough to be very useful, at least not if you want to read. If you're okay with dim light it's fine.