I have bought 3 of these in a span of 2 weeks, I have one at home, one at work, and I got one for a family member who suffers from SAD too. My depression during the dark winter months can be debilitating (I live in the mid-Atlantic US), but within 2 days of starting to use this light, I felt better than I have in years during winter. I’m going to order a 4th one for another family member. It is so easy to bring with you for work, travel, whatever, I only bought a second for work so I wouldn’t forget it at home in the morning. It’s the size of an ipad, you just plug it in, hit the one button on the side, and it’s on and you can imagine you’re laying out in the summer sun (even though this does not produce UV light). Amazing!! I wish I had known about this product years ago. 6/5 stars.

Solo que hay que usarla cerca de la cara

I cannot say enough good things about this daylight lamp! I used to own a daylight lamp that was very big, bulky and weighed a ton, so I only used it very sporadically. I recently moved to an area that sees very little sunlight in the winter months, so such a solution was necessary. This device is INCREDIBLE - it's so light you could easily take it anywhere with you, it's very sturdy, beautifully designed enough to be permanently displayed on my desk, and very powerful. The change that it's made to my quality of life is significant - all I can say is that for me, it really makes a difference. I have it next to my computer, and have it running while I work. Since I started using it, the difficulty that I was having with the bad climate has totally gone. And I can't believe that it's so affordable - honestly, I would happily pay 5X what I did for this. The only thing that I would want to change would be for there to be the ability to run it off of a USB cord - it would be neat to be able to take it to places where an outlet isn't available. But for this incredible price, I can't complain.

Overall, I have enjoyed this product. It does exactly as described. It is lightweight, easy to move (which is perfect from taking to and from my office) and gives off enough light to get me recharged throughout the day. I use it about 30 minutes in the morning and again about 30 minutes in the afternoon. I have noticed since starting to use I sleep better at night and do not have the traditional '3PM Slump' I used to experience. Out of all the products I looked at I am glad I picked this one. The only complaint I have, which is a small one, is you really do not have any idea how bright 10,000LX is. While I have enjoyed it, several co-workers and visitors who have walked into my office have commented on how bright it is and have had to shield their eyes. As such, I have taken to closing my door and not scheduling meetings when I use it or have it on.

Warning to SAD sufferers: This lamp produces BY FAR insufficient light.Using , and a tape measure, I measured:10,000 lux, yes, BUT ONLY at 3 inches from the surface of the lamp.Sitting at my desk, using the measuring tape from my eye to where this lamp might sit to my left or right, or over/behind my computer monitor, I measured 24 inches to be about how far away it would sit.Again, using the light meter, at 24 inches, this lamp produced only about 400 lux.See Wikipedia for a description of "lux": Lux is a measure of the number of lumens of light received per square meter. (1 lux = 1 square meter of area is getting 1 lumen)But at how far away, right? I mean, everyone knows that light is less bright the further away from it you get. Therefore, a lux measurement should ALWAYS ALWAYS ALWAYS be accompanied by a DISTANCE. Example: "45 lux AT 3 FEET AWAY".Flashlight and light bulb manufacturers get around this problem by simply quoting lumens (which we assume they measure RIGHT AT THE LIGHT BULB). But to know how many *lux* you're getting at your eyeball (which should dang well NOT be at the surface of a light bulb), you can't quote lumens. You have to quote lux PLUS the distance you'd be away from it.Okay, so if we're agreed that lux needs distance always quoted with it:Now let's look at the Amazon description for this product. It only says, "10,000 lux". But where's the distance? Missing.How about the box? The box says, "Light intensity of natural spectrum daylight of approx. 10,000 lux". Super. Still missing the distance, right?How about the manual? I have scanned in a page of the relevant sections of the manual:Section 9. Specifications:Light intensity approx. 10,000 lux. (Still missing the distance, right?)Section 6. To Use8 inches for 1/2 hour per day or 16-24 inches for 2 hours per day, etc.This table is just plain wrong. At least with the unit I got, and the light meter I used.Even at 8 inches (and no way could I stand having this thing only 8 inches from my face), I still measured only 2,250 lux. How long would that take me to get the therapy? I estimate:(10,000 / 2,250) * 30mins = 133mins = 2 hrs 13 mins .. NOT 1/2 hour!Even their suggestion that one could use it for 2 hours at 16-24 is inaccurate, since that's a huge range, and lux will definitely be much lower at 24 inches than at 16.Again, for the unit I purchased from Amazon, I only got the 10,000 lux === AT 3 INCHES ==.As most of you may know, to get true therapy, researchers advise at least 10,000 lux (at your eyeball) for 30 minutes, daily. (Or 5,000 lux for an hour, or 2,500 lux for 2 hours.)How low could we go on the lux, though, just increasing the time?Well, it turns out that researchers also state that the MINIMUM lux needs to be 2,500 for it to begin to take effect. THEREFORE, we can't just work with a weak light (under 2,500 lux at the distance we have it) and add more time. It won't work.So, if 400 lux WERE above the minimum therapeutic level, and I placed this Beurer unit a reasonable 24 inches away on my desk or over my monitor, how long would it take me to get the same therapy from this weaker lamp that I would for 30 minutes using a lamp which was giving me a true 10,000 lux at my eye?(10,000 / 400) * 30mins = 750mins = 12.5hrsWhich, of course, is ridiculous.BUT!!!!! Because of the minimum lux of 2,500 for the 'timer' to even start on therapy, it means that placing this at a reasonable distance of 24" on your desk will give NO therapeutic results -- at least for most people -- according to the researchers, at least.Maybe someone gets some therapy from this -- but, if what the researchers say about minimum lux of 2,500 *for most people* is true, then either the people reporting that they like this light are among the few who can get therapy from only low levels of light, OR there is a placebo effect going on for them.Conversely, even if someone might argue, "Yeah, but I would have this lamp closer than you would," would they *really*? I would challenge them to measure their desk and how they sit when working. I'll bet 24" is *at least* the distance they would have it at.And even if they would have it closer, would they really have it only 3 inches away from their eyes for 30 minutes?Again, to get the minimum lux of 2,500, you'd have to be CLOSER than the 8 inches i measured 2,2500 lux at. Say, 7 inches. Are you REALLY going to hold or position this sucker 7" away from your face for 2 whole hours?It is HUGELY IMPORTANT for any SAD sufferers to invest in a lux meter. As you see from following the link to mine, they are inexpensive here on Amazon -- and there are several other models equally good or better. So we've no reason not to get one, and get confirmation from any device (or even from walking outside) how much light we are truly getting.One more minor point: The little green plastic snap-in stand that props up this lamp from the back: It fell out by itself several times while I was measuring the unit, dropping the lamp onto the table. I did not get confidence in its quality from this. Yet a minor issue compared to the lux.Hope this helps someone. If I'm wrong on any of this stuff, please comment, and I'll correct/fix it.

I am so glad I went with this lamp, and man... It was a struggle picking one out. It's very hard to find therapy lights under $100 that are both 10,000 lux (which is the required lumens/light intensity for these things to work), and also do not have the crazy ionizer that produces ozone. One brand makes one that meets all these criteria, but it's a blue light instead of a white one and I couldn't find much research to support the claim that the blue light is as good as the white. So I went with the Beurer light, and it's fantastic! About the size of an e-reader, the lamp is thin, light, and intelligently designed. It's very simple with a removable clip that can be positioned in a multitude of ways for the optimal angle. It's not the sturdiest stand in the world but if you are only using this 15min-1hr a day, it doesn't really matter. The on/off switch is in the rubber gasket surrounding the device and is responsive. The light itself is VERY bright (as it should be) and when I measured the lux at home with a light meter, it actually registers around 11,000 lux within an inch of the lamp, so you get more lux than advertised! The cable quality is fine, and it even comes with a cute felt case that fits both the lamp and cable within (though it looks lumpy and awkward when everything is inside). I did research on the brand like another reviewer said, and Beurer seems legit. I was a little skeptical because their images of the light are not photographs, rather computer generated models (which sometimes raises a red flag, in my book). But the quality of this thing is great, and I don't really have any complaints.