For the price this is an amazing light. Only thing weird is that the light ...
936175
For the price this is an amazing light. Only thing weird is that the light portion screws off not the bottom. So no pressure switch option.
3606905
This is a great light. I'd totally buy it again, but there are a couple things I wish I had known before I bought it.

I think it says it changes modes when you touch it, but it's really more like a good swat. I haven't yet mastered it.

The description indicates it is charged with a micro USB cord, but I was a little surprised one isn't not included. It's possible the description is forthcoming with that information, but I missed it.

The light is plastic filled with air, so you have to be a little careful not to squish it. Even if you do, the air returns and it's good as new. But in my hands it feels a little deflated.

Having said all that, I'm still extremely happy with my purchase. I'm even considering buying another as a gift.
3661942
Wow..I can not believe how bright this little light it is. This light would give my 2AA LED Maglights a run for their money. I can foresee a problem with it unscrewing and the batteries falling out. It would have made more sense to make the light turn off when the lens/bulb was tightened all the way. The way it is now, when you lossen the lens/bulb it turns off so there is the chance that it may come undone and I will lose the bulb and batteries. Otherwise it's an awesome light for it's size. You will barely notice it on your keychain.
4907264
Someone needs to make a movie of these lights so you can see what they do. They are absolutely amazing. We have a few parties each year and I bought two of these and put them into recessed light fixtures in the house. They screw into the fixture like a normal bulb but when you turn on the light, they rotate at the perfect speed and an incredible amount of light "bounces" off the walls and the floor. The light is generated by LEDs so the light does not get warm and the motor noise is pretty quiet.

I was shocked at how good this works for such a small amount of money.
2584518
There are a few things great with this light and a few things not so great.
Overall, it is a great unit for the price. I am displeased that the price dropped four dollars a day after purchase but nothing I can do about it with Amazon's latest policies. If you do not have an immediate need, I would "save for later" and track the price.
Also, please really think about whether you need the dusk to dawn feature or if it is more of a "nice to have" aspect. In retrospect, the sensor is too sensitive and limits full adjustability of the light (see strobing comment below) so if you don't need the sensor, you could save money and headaches by getting the non-sensor version.

The good:
- This thing is bright; very bright. I just installed it and with the snow outside, it is comparable to the Griswold's house on Christmas. If you need adequate illumination in a small unit, this thing is very good. The lumen output is 1475 per the manufacturer's specifications but listed on the box as 1500.
- The wattage draw is really low for the output. Manufacturer states 20.1w with an efficacy of 72 Lumens/watt which is really good for this type of unit.
- The installation is made very simple with the presence of push-in type quick connectors eliminating need for wire nuts/tape. I literally stood on a ladder in a snow storm installing this and it was surprisingly easy/fast.
- The adjustability is good where the housing can swing up/down almost 180 degrees as well as rotate clockwise/anti-clockwise nearly 180 degrees each way. The up/down adjustment is made with a thumb turn screw so no need to fumble have a special tool or worry about stripping a nut/bolt/screw. Hopefully this doesn't break after exposure to sun/weather/temperature fluctuations
- The unit is manufactured by Cooper industries/Eaton so it is not a complete unheard of Chinese knock-off piece. Instructions are clear, in English, and (based on previous experience) the customer support should be decent.

The bad:
- The photo cell is very sensitive. It is so sensitive that if you angle the light downwards more than 45 degrees, there is a strong possibility the light will start to strobe from thinking its own output is daylight. This is my most critical comment of the unit. There is no way to adjust the sensitivity aside from rewiring to bypass, fabricating a shield, or disassembling the unit to invert everything so that the sensor points up instead of down (make sure to waterproof the sensor threads/hole). Even still, it is nice to have the feature of dusk to dawn when it works right.
- It may be too bright. As I mentioned, it is really bright and if you have close neighbors, or you need to angle the light up to avoid strobing, it could annoy others.
- The color temperature is too cool for some. I don't mind too much but if you have all warm white lighting on your house, this will contrast sharply from that color scheme. It truly is daylight white; 5000K.
- Not available in a variety of colors. Yes, you can paint it but if you want an everlasting finish color on this, you will not get it. That is the downfall of the lower cost of the model. Luckily, I have white trim on the house so it works. I would never be this picky but it is important to some people.
- Minor issue I had was that the mounting plate cuts did not line up directly with the older junction box I was mounting it to. In retrospect, I should have double checked and brought the plate inside to drill out some more room in a screw slot but I force things in knowing I was replacing the box later and it was close enough.
1485270
This is a pretty cool light for only $30.  I was a little surprised at the dimensions of it when I opened the box. I guess it's roughly the size of a VHS tape. Also, I was under the impression that the LEDs would illuminate out of the bottom, as if it were mounted in an upright position as the picture shows. In reality, the lights are placed on the side opposite the solar panel. This means the light needs to be mounted horizontally (when I think about it, upright would work too). No big deal there as the unit has a number of places to either use the screws provided or use your own set up. The entirety of the controls consist of an on/off switch. I've had this light for a little over a week. I thought I'd do some testing at home as I'm not able to get out to camp for a while. Initially, I stood it on a window sill inside with it turned off.  I left it there for 3 or 4 days.  Then I temporarily installed it about 6.5' above the ground in a spot in my back yard. Then I instructed my dog to act as a hog and try and set off the sensor. In true form, it took him 2 days to stand under the "feeder". The result was an impressive, bright, wide spreading green glow. I cannot wait to see it in its intended setting. The light stays on for some set amount of time, like 45 seconds, unless there is movement. If this thing holds up this season, I think I'll pick up 1 or 2 more.
2596776
Awesome light for the price.

Pros:
- Very compact and light
- Good beam profile (medium width with even spread of light)
- Probably not 2800 lumens, but very bright
- Battery lasts multiple hours(haven't killed one yet)

Cons:
- Battery is 4 cells in shrink-wrap that I doubt is waterproof
- Battery holder is cheap nylon that will move around if strapped to a frame tube
- Green light on the back is distracting when mounted on bars (fixed with piece of electrical tape)
- Lenses rattle a little, but it's never been a problem

I charge the battery on a metal plate in the garage just incase it explodes
288349
Excellent lighting.  The only downfall so far is that it is a little heavy to move around
4322799
These light are awesome! They are easy to take off and the front like can be adjusted to whatever width you want when riding.
The reason why I am giving these lights 4 stars is mainly because of the front light and the packaging:

Although the front light is very sturdy and has good weight to it (showing quality) there is only ONE LED. Now I can understand that it is using optics to expand the light and make it brighter and energy conservant but I thought there would be more than just one LED. The light itself produces a lot of light when in complete darkness but is not that noticeable when used on the streets. Another thing is that although the light is adjustable with the width of the light being shown, it isn't too sturdy and if it isn't in the completely narrow or wide position, it causes a lot of shaking/rattling due to the road.

Now for the packaging, I was bummed that these lights didn't come with batteries. I know they aren't the most expensive lights but having to go buy 5 AAA batteries burns an extra $7 or $8 which is never fun.

Other than that I really like how you can take them on and off of the bike with ease. The backlight has 5 LEDs which shine super bright and have 3 different settings. The front has two different setting (flash and solid) and is easy to take apart and maintain. Although there are faults to the front light WHEN BIKING, I like it can be detached and is actually very convenient and useful for other things during the night. (Like walks, inspecting areas on your bike at night)

Still I really like these lights and would definitely recommend to anyone!
3435238
If you are looking for a light which has all the features of a self-defense light without wanting to spend the highers prices for professional-level tactical lights ($80-$150), this is the light for you.

The features which make this a great light for self defense:
- Small, but not too small, size.  You can carry this on your belt easily without it getting in the way.
- Crazy bright, and I mean stunningly bright, light.  This will stop someone in their tracks.
- The button is on the back end, so you can hold it in your fist.
- The button will turn on the light with gentle pressure instead of a full click and release (as most lights do).
- Three modes: normal, strobe, and dim are perfect (including the strobe rate).
- Crown bezel (probably the most minor advantage of the bunch).
- And a surprise feature I didn't expect: the belt clip is a snap release allowing for very fast deployment.

Potential disadvantages:
- Not rechargeable - it uses standard batteries.
- The batteries are not typical AA, or AAA, but still appear to be easy to find at local stores.

I would heartily recommend this light in a heartbeat!  It is the only light I have found so far which fits the the self defense application well, and doesn't cost a hefty amount.  If you are a pro who uses a light every day then you may want to spend the extra money for a rechargeable but this light is fantastic.
483288
For the price, these lights are fantastic. I have many rigid industries lights and I can say that while this is no where near as bright, it is still a very bright light, and the quality of not only the light, but also the packaging used to ship it are top notch. If it is compared side by side with the rigid dually it is a hell of a deal. Just buy a couple extra to get the same amount of light because (lets be honest) all most people are going for is the look, anyway.
1084228
I just couldn't pass up the $26 price tag on this light when comparable lights are $50-$100. I have been using it for about 1 week with no issues, although there is a bit of a learning curve. I wonder if some of the reviewers who said the light doesn't work didn't know how to use it? The light is small as other reviewers mentioned and the instructions on the different modes are not very clear. I got it in the motion sensing mode through a bit of trial and error. I don't believe this is detailed in the instructions, but the motion sensor only turns the light on at night. Flip the switch on just once to use normal motion sensing mode or flip it on-off-on in quick succession to operate in dusk to dawn mode.
2542310
It is a lot of light for the money, that's for sure.

It comes with headlamp straps, but unfortunately the battery and the cord don't really fit into that setup so you'll have them dangling from your head.  Not really the right solution for a headlamp, but it sure is great as a bike light.

Issue 1) when you plug it in the light flashes momentarily.
Issue 2) when it's plugged in, the button on the back flashes every ~5s, even when it's off.  You have to disconnect the battery from the light to prevent this.

Five stars anyway, this is more light than I expected to be able to buy for this price.
1421466
With a price tag of just north of $16 and a generic Mandarin label I wasn't sure what to expect, but the taillight works great!! The lasers project very bright red lines onto the road and the blue led's are very very bright. Overall I would highly recommend this light to a friend, the only issue I had was that the seat post mount did not fit around my seat post. I ride a&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Dahon-Speed-Uno-Folding-Bike-Shadow/dp/B004YHZ9QK/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Dahon Speed Uno Folding Bike, Shadow</a>&nbsp;which has a particularly thick seat post. I came up with a simple solution using two zip-ties but its great!
344761
I bought these light several months ago at about $45.  It looks like the price is holding steady.  For what you get, the price is amazing!  I've seen similar lights go for well over $100 for shorter strands.

These are so much better than the strings of rope lights.  They look better (much less ghetto) and put out an incredible amount of light.

The lights themselves are most definitely waterproof.  The power supply (a typical 110V to DC inline converter like you get with a laptop PC), is decidedly NOT waterproof.  I never expected that it would be though.  Putting it in a waterproof housing and then sealing it appropriately doesn't seem like it'd be a difficult task for those that need.  The computer controller/IR receiver part would also need to be waterproofed by the user.

Now for the caveats:  The white light that these put out is a composite white (a mixture of the Red, Green, and Blue LEDs).  This is not a problem, per se, but you can see the individual R, G, and B portions of the light from a fair distance.  The white light is a cool white light that's worse than flourescent.  It's not an eye-pleasing warm white like you're used to from incandescent lights.  I would not want this type of white light to be my only illumination.

There's a couple of built-in programs: flashing and fading.  The flashing is practically useless.  The flashing is so fast that the first thing you think of is that they may cause a seizure.  The fading is a much better program.  Much slower and much more pleasing.  Honestly, I have a difficult time figuring out a practical application for the fading.  Rave?

The lights are not chasers.  The do not sequentially flash.  I did not expect that they would.  Doing that requires much more sophisticated wiring and controller and would, no doubt, cost more.

Caveats aside, these get a 5-star.  They wildly exceeded my expectations.  They are unbelievably bright and offer an incredible range of colors.  All at a very low price.  These are absolutely perfect for accent lighting or rear lighting of artwork / curio cabinets.
4250979
I've been using this light in mostly no budget indie film sets and some professional interview sets. It is NOT a professional light at all BUT for $100 it is really quite great and useful. You just need to work around it's problems.

PROS:
Cheap
Very lightweight. Can mount to a lot of places easily
Very bright. This guy can get oddly bright.
High CRI. Yes it is 95 CRI and renders light very well.
Remote is pretty handy
Quick customer service

CONS
This is NOT a professional light. I've used it in simple professional interview set ups and it looks great but there are a few downsides.

No yoke. If you want to tilt or pan it you need to pan the stand or get a decent ball head to mount it securely. It has four 1/4-20 screws on each side. And one of the 1/4-20 slots inside the light actually broke and a stud of mine is stuck in there. My fault for over-tightening but important to note.

The cooling fan is fairly loud and comes on and off unless you set it to always be on. So recording sound can be a little problematic. But if you know how to clean it up in post it's ok.

The light has overheated past 85% and shuts off. If you're in a hot environment it can't handle being dimmed up past 85% for very long even with fan on. Luckily 85% is pretty bright.

Barn doors are trash. Don't really shape the light well enough. But they allow you to clip diffusion on.

Remote is kinda hard to figure out.

So all in all for $100 it's pretty damn good. I've gotten a lot of use out of it. Set it to max, diffuse the hell out of it. It looks great.
2233466
There are a lot of lights on Amazon, and many of them make dubious claims about their battery life and how bright they are. You know what you're getting with CatEye. The biggest advantage this light has over others in its price range is the battery life. I've been getting the claimed battery life without any problems. That has not been the case with one of the no-name lights I bought.

The highest setting is bright enough for almost any situation. The only exception would be technical MTB riding, which this isn't designed for, anyway. I've ridden this on pitch black roads as far away as I can get from traffic and it is plenty bright for that. It's more than enough light for urban commutes with lots of street lights. It's easy to switch modes (even with gloves on) if you have a mixture of the two- just press the big white button.

The big downside, as with most CatEye lights, is the mount. I don't know if my unit is defective or what, but it's pretty much impossible to remove the light from the mount. I press on the button until my finger hurts like crazy and the light still won't come out. I got it out once, but haven't been able to do it again. Now I just unscrew the whole thing and remove it from the handlebars. It's easy and fast enough to do, but could be better. My main worry is that I'll end up breaking it from removing it so often.

As a whole I'm very happy with the light. I don't know of a light out there that offers such a high output for such a long time in this price range.

Side note: I ordered this as a Warehouse deal and it was exactly as described (packaging wasn't perfect, but the light itself was).