1200 lumens? Maybe 600
584744
Nowhere close to 1200 lumens, maybe 600 tops. I'll be getting another light to replace this as soon as possible. This light either needs to be made true to the specs it plainly lies about OR it needs to be at a price point that reflects the quality of work you're buying. This light should be $19.99 as it is right now. Very disappointing.

Edit... 5/10/18. They sent a new light to see if u might have gotten a defective one the first time. Nope, same thing. Nowhere close to 1200 lumens. Te-rich makes a great light that's way better and brighter for half the price. Tansoren makes one a little better than the te-rich but closer to the price point of this piece of trash. I'll still keep it so I don't have to go through the hassle of sending two back now in the packaging for one. I'll just use it as a headlamp in addition to the new lights I'm about to buy for my bars.
2495412
These are bright, but not as much as the 1200 Lumen amazenar t10 LEDs. I wish at least 800 lumens were available in these, but they do the job.
3986515
Good flashlight but not even close to 900lm. More like 250lm
2147706
OK, no where near the lumens as advertised, but didn't expect that for the price.  For the price, very bright and sturdy product, enough to give it no less than 4 stars.
3401404
My comments are Verifiable at GrassCity.com these bulbs are not the equivalent to a HPS (High PressureSodium)250w bulb, the stated output of approx 11000 lumen is the equivalent to a 100w HPS bulb and as a side note for a typical homeowner you need to know the power supply necessary is 220/240 volts
2609165
800 lumens, hmmm maybe.  I bought them as turn signal for my 2010 Jaguar XK.  They seem to be bright as my old OEM old bulbs.  Nothing special I guess.  I was hoping they would be brighter, but not.  I guess I'll say I Do recommend this item to my family and friends.
2939491
I love these lights as an installer, and use many in my own home. I discuss them in detail in a blog post

http://energyconservationhowto.blogspot.com/2014/05/nicor-dls-important-new-led-plate-light.html

and in a Picasa web album

https://picasaweb.google.com/108533770292578040917/NicorDLSLEDPlateLight#

I find these give better work illumination than a 150-watt incandescent bulb. Calling them "60 Watt Equivalent" is very unhelpful. Five are very adequate fully-revealed on a large kitchen ceiling in the photo, where six or seven 800 lumens downlights might else be set wastefully in cans. No light should be recessed. Light hidden is light wasted.
943422
Definitely not 1800 lumens. I have a Duracell 1000 lumen that is at least 3x's as bright when side by side. It came 2 days passed the expected date. I gave 3 stars because it is small, bright enough for inside the house, and comes with a bunch of accessories.
2900771
280 lumens.... check
bright as hell... check
only thing i can even come up with that is less than desirable is the color... id perfer black
2065102
Amazing upgrade from 9006 low beam bulbs. Only a little trimming and you will almost double your light output.
9006=1090 Lumens
9012=1890 Lumens
 Recommended to any one trying to switch from those outdated 9006 bulbs. Next upgrade for me will be replacing my high beams(9005) to 9011.
3556560
It was my fault for not reading the description carefully. I thought they were 400 lumens. No, they're 19 x 5 leds, so 95 lumens, so about as much as a small flashlight. Good enough for slow riding when you need to see a few yards ahead, but if you're riding on unlit roads and going at a good speed, you need more than this.

Cons:
Construction is flimsy, but it's what you'd expect from something in this price range.

Pros:
The mounting clamp works great. Secure, and easy to remove.
554336
very bright, but probably not as bright as advertised. Wished it would have said more clearly "special batteries not included".
3930953
First these are 350 lumens not the 300 advertised but that didn't really matter to me since Im putting them in to be dimmable, but what annoys me is not five minutes after installing them one died.
4159180
This is great! It is super bright (600 lumens ) aimed further out but dims instantly (100 lumens) when pointed at a nearby opject.
988037
I was so impressed that I bought another.  It's bright but not 900lms, or even 500lms.  I think it closer to 200-250lms.  I think it's kind of funny that a decent 18650 battery will cost more than the flashlight it's in.
2289451
This product does not come close 1000 lumens.  I should have not trusted the low price.  I got what I paid for, and I have given all of them away.
3932178
It is OK but not really very bright.  I doubt they are even close to 240 lumen.  And the light makes a lot of noise (rattles) when you ride which bothers me so I took it off.  It was cheap so my expectations were low.  I don;t think I would buy another one.  I would upgrade to one of the 1200 lumen T6 lights.  I have purchased a few of those and they are very good value.