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This is a rugged little lantern. I have to say that for $10, I was not expecting something of this quality. This is a solid well constructed unit that will not disintegrate if it gets knocked on the floor.Other reviewers have stated this provides light for weeks. Not so... While technically it may output light on 3 AA batteries for 125 hours, it isn't at usable levels.I bought two of these, and as soon as I received them, I took one of them and inserted the batteries that were included with it, turned it on and left it. I wanted to see if it would live up to other reviewers claims on battery life.I realize that battery life would be extended with intermittent usage rather than continuous use, but if you are planning to use this for emergencies, you may need it running continuously for extended periods.Anyway, the first 24 hours were the brightest. It easily illuminated my 10 X 12 study well enough to distinguish objects around the room, and I had no problem reading by it. After 48 hours, it did get somewhat dimmer and to read by it, I had to hold the book right next to the light. At approx 72 hours the light was feeble and I had difficulty reading a book with the light right next to the book. The light output was less than a standard night light I have in my bathroom.At this point, I opened up my second lantern that I had purchased, inserted the included batteries and set it side by side with the lantern that had been running continuously for 3 days. The lantern with the fresh batteries was far far brighter, so at this point I ended the experiment as I felt that the light output from the lantern that had been running for 3 days really wasn't useful.The last thing I did was to insert 3 fresh energizer batteries in the lantern that had been running for 3 days and set it side by side with the lantern with the fresh batteries that were included with it. The lantern with the energizer batteries was noticeably brighter.So, buy the best batteries you can and you may well get the 125 hours of light this is purported to produce.All in all, this is a very good value for the price.UPDATE 06/05/2011:It's been almost 3 years since my original review and both lanterns are still running in top notch condition. My neighborhood in Springfield MA took a direct hit from an EF3 tornado 4 days ago and these lanterns have been my primary source of light since then. I've not been running them non-stop as in my original tests, but only for about 5 hours a night, and they put out extremely useful light levels. I haven't had to change the batteries out once. My utilities were restored yesterday, but these lanterns performed the task extremely well. I'm going to order a few more.

Wow, this little thing ROCKS! the power of this device is outstanding! I bought this to use on a set of Sennheiser HD 202 II Professional Headphones and have been blown away by the performance of this Amplifier! The bass boost (gain level switch) is an awesome feature that works quite well. The headphones I use are bassy as it is but this amp takes it to another whole level! This amp is not an audio afficionados best friend as it wiill introduce mild distortion. But that distortion is probably not even noticed by the average consumer. There is three separate EQ settings and two selectable gain levels to tailor the sound output to almost any taste. Plus if you are experiencing any kind of feedback there is a protection circuit that kicks in to protect your headphones (and your ears) from any sudden unexpected problems with the signal, this saves you from any harmful squeels or unpleasant and/or potentially damaging sounds to your hearing. The internal Li-ion battery, can be charged via a mini-USB port, and is user-replaceable, which will ensure that the E11 won't be just tossed in the trash when the battery fails. There is a 3.5 mm stereo input and output receptacle on the amp which will work with most all popular mobile devices and earbuds on the market. The volume is controlled by a volume control wheel located on the top side of the unit and is protected by a surround from accidental movement. This volume dial is accessed from either side and rotated to increase or decrease volume levels. Also, you can actually use a Y adapter to listen to two sets of headphones at once! I get on average over 5 hours of constant use out of my device on one battery. I bought a backup battery when new so that I can use it for extended periods. A battery charges in a little over 1 hour. There is also a USB port on the side of the charger, so If you need to use a USB port while your using the charger you can plug into the spare port on the charger while charging. The amplifier cannot be used while the unit is charging, and that's where a spare battery helps. I have even used this as a mini amp for a set of mini speakers on my laptop and this made them little suckers JAM! I would definately recommend this to a friend, already have!!

Overall, I'd recommend keeping a couple of these on hand for a power outage. At their current price they're a good deal.We recently purchased several small, battery powered LED lanterns because our house experiences frequent power outages that last a couple of hours. All the units we picked were powered by AA batteries, and meant to be easy to move around from room to room.Pros: The Coleman MicroPacker was the cheapest - the others were twice as much or more. It has had good battery life, and the adjustable lighting reflector (providing either 360 degrees of illumination when down or more narrow focus when up) has turned out to be a useful feature, depending on where int he room you want to place it. So far both the ones we bought have been reliable, even though they've been dropped several times. They're reasonably sized - a little taller than a soda can, and skinner, and weigh about half as much.Cons: Of all the lamps we bought, these were the 'least bright' - but since the cost way less than the others, you could by 2 or 3 of them and end up ahead. The light color is also the harsh white associated with early LED's, which may not matter to some folks. There are other products on the market now that offer 'warmer' LEDs.