Good for traveling, LED's are super bright!
931816
The first thing I noticed about the ZuZo slim case is the rubbery feel. It is a matte black and feels like a soft rubber. You have to lift off the top and slide your phone into the bottom part. There is a lightning pin "male" side in the bottom interior of the case. On the outside is the 'female' part, which a cord can be plugged in to. This is how you charge the case.

There are 4 blue LED lights, which are mentioned as a selling point. However, these lights do not eventually dim and only go out once you have exhausted the battery of the case. They are very bright and make it difficult to have the phone plugged into this case overnight in the bedroom.

The case fits snugly on the phone. The "Kickstand" was very hard to remove from its spot in the back. We had to use a screwdriver to dislodge it to fold out. It was ok for watching things horizontally but doesn't help in a vertical position. The case itself is bulky but I'll deal with it for the extra juice.

Charging the case and the case charging the phone isn't rapid by any means. Maybe an hour to charge the phone and similar to get the case up to 100%. Not bad but not quick!

I can see this being beneficial when I need to be out for a day. It would have been a huge asset at Disney World! Or a theme park or at the beach.
1608108
Very bright, if what you want is to be seen, I definitely would recommend as a touring light. Light doesn't extend more than a couple of feet as a beam would be concerned. The charge holds up to their appropriate runtime and the hold charge is excellent as well.
1225235
These led lights are really amazing. They have double sided tape on the back so they can be attached to just about anything. They include a receptacle on the far end where you can plug another set into it as well but I don't know the limits fr this feature.
We are using them to illuminate a camp site but if I can find a battery pack to provide the 12 volts they use I want to install one set onto a Kayak for increased viability at night.
4135728
These little led's are bright and are easy to fit to seat tubes and handlebars.
I use these to be seen by motor vehicles while on the road and anyone on the the bikes paths.  These will not provide enough light to actually see where you are going (or see the details of the road/path/etc) but work well in combination with a dedicated headlight.
1468500
these are very bright!  However, that brightness does not seem to last very long.
2837709
These are great little lanterns! Really bright! I will use them when I travel to Africa and am in places with no electricity! I really wish I would have had these on my last trip. They are small, but mighty!
432894
I really like how bright the LED light is. Definitely more than 1000 lumens, I don't know if it is actually 1200 though. Caution: it does not come with a head strap as the description said it included (or maybe mine just didn't come with it). It does come with a pretty neat battery pack that can be used for other charging devices. And the tail light is an extra bonus. Over great price for the quality of light.
2480426
These flashing LED's arrived directly from China in just two weeks, appearing in my mailbox a day earlier than the estimated delivery date. They work great from a nine-volt battery, and appear to have about the same brightness as when supplied with 12 vdc. The color is very warm, tending toward pale yellow, and they are quite bright. The connections to the 6 inch leads, as well as the resistor, are insulated right up to the base of the LED with shrink tubing. I'll be using them to replace miniature tungsten bulbs in vintage indicator lights on various Halloween Mad Lab props.
594688
I was hesitant to order direct from china but considering these are almost $2 each when you buy them in cali, I figured I'd give it a try. The estimated delivery date was more than a month from when I placed the order but they got to my place in 9 days. All 50 were in the pack. I wired one up to an arduino and it is VERY bright at full power. It's painful to look at actually. The color blend isn't great but very similar to other rgb non diffused LEDs. I sanded one and it diffuses nicely now just as a test. If you're wondering the specs, it seems like this is the data sheet people are talking about.

[...]

i used 5v from the arduino with a 147ohm (1x100 and 1x47) resistor to red and 100ohm to green and blue. That's operating towards the high end but with how bright these are you could use higher ohm resistors to make them use less power and bring them down to the lower operating range. I would definitely order more of these, maybe diffused if they offer them.

E
3038903
I got a couple of these LED flashlights (please note, despite the low-cost USPS postage they are coming from China, it can take quite a while) for a project to make my own UV light source for scanning US currency.  When they arrived, I noted that it would be possible to swap out the high intensity flat LED for a standard clear bulb UV LED, but it would sort of be a shame to mess with such a well packaged product.  The lens is of much higher quality than I expected, and drilling a hole in it to ensure that the UV passes though would produce a less than optimal result.  The lights run on a single AA alkaline cell, are housed in an aluminum body, and are very bright yet compact.  I've decided to keep them and use them as is.

One possibility for why this product is so inexpensive is that they have a non-functional compass on the back end of the housing.  Not a problem for me!
4192440
It works.  The screw holds it securely in place.  So far, so good, but the LED that tells you it is working is really bright.  I wanted to use this to charge a couple of iphones in the bedroom at night, but the glow is just too much.  I guess I could tape over the LED, but wifey says that would be too ghetto.  So it's back to the drawing board.  I guess I'll use this one as an outlet multiplier in the garage.
3615495
The LED's are very bright, but I can't attest to the "one mile" visibility claim.  I'm GUESSING that this thing can be seen a half mile out.  It has nine light patterns, one of which is an SOS so if you are in a boat and have one, this might help.  Along these lines, it is also waterproof and floats.  It sticks perfectly on my Ford F150 and the magnet is prevented from scratching the finish because it is slightly imbedded in the light frame.  The manufacturer states it is a polymer that can be run over by a car without breaking.  Haven't tested this nor do I intend to, but good to know it is tough.  Since it is an LED, I don't expect battery life to be a problem, but just in case, I bought a spare two pack from Amazon.  In an emergency, I would use this on my roof and put incendiary flares in a wedge behind the vehicle.  If you've ever been stuck on the curve of an Interstate with a narrow shoulder on an icy night (yes, I have), you can appreciate the importance of this level of safety.  I also recommend carrying the brightest flashlight you can find - I recommend:  Maglite Pro New Ultra Bright 274 Lumens Black 2-Cell D LED Flashlight - ST2P015.  Also, after you've got your markers out, call the cops and then get the hell off the road just in case all of this is insufficient for stopping some fool from hitting your vehicle anyway.

At this price, get two of these flashers, some conventional flares and a good flashlight so you'll be really safe.
2873844
Very bright LED lights. Color is nice and happened to match my headlights fairly well. I also bought the Sirius LED bulbs for my interior as well. They were so bright that I had to leave them off. I tried only using one LED bulb, instead of two (my dome lights have 2/one on each side) but even one was too bright. I only use them when I need to find something in my car now. Would recommend these bulbs if you like bright LEDS
4006678
LED is bright enough to ride at night. the flash light is detachable from the handle bars.
 One thing to notice is the button on the top is easily pressed when I carry it in my backpack and found many times the battery was on inside my bag
1680658
Both lights are extremely bright. A driver rolled up to me a few days back to compliment me on me being visible. I have no regrets buying this combo set. I previously owned the front light on it's own at one time, but it was stolen the one time I forgot to remove it from my bike. There are plenty of light settings to find one's favorite. As far as battery life, I have gotten my lights to last many weeks. The rechargeable option is amazing. I don't have to worry about batteries. I just plug them over night and then they are good to go in the morning for another month or so!
4427290
Very bright LED in the front - back is slightly dimmer but both of the flashing setting at night will be fine in 90% of weather conditions (I'm an idiot and ride in the other 10 so it's more a personal preference)  otherwise 4.8 stars
2787974
Wonderful.  Small enough for travel.  Love the different levels of brightness