Bests & Worsts Reviews from Amazon

[Edit: I was able to run this off battery pack... see review.] I bought this based on the specs, before anyone had reviewed it. I thought for the price, it was worth the experiment. So this is the second review on the product. I was amazed at how thin this is... think a tad thinner than the rubber part of the micro USB connector. It appears to be three layers. The top appears to be a thin acrylic. The middle is the LED part. The bottom appears to be some sort of sturdy styrofoam/soft plastic with small knobs for feet (so the cable can be plugged in). There is an optional (not included) rounded foot you can put on light box to create an angle. It does not have a clip (which I think is not necessary). It also sports a ruler on two edges. The cable is long enough to have the tower sitting on the floor and light box propped up at an angle on the desk, but only just. I tried to run it off a 16,000 mAh power bank (back up battery). [Edit: I was able to run this off the mentioned power bank without problem. I didn't run it for long but it was okay for the time I needed it. The first time it seemed to go off quickly.] I found the on - off function frustrating. It will shut down, seemingly randomly... but will turn on when the power "button" is touched again. The only thing I can think of is that pressing on the surface at some points may mimic pressure on the power button. (I was making sure I was not touching the power switch.) But that's a matter of touch that I think I have down now. The light is adjustable (up or down) simply by keeping your finger on the power "button." The work area is 9 inches by a little over 12.5 inches. I've used this for two quick projects in full sunlight. I could easily see through Canson 140 lb water color paper and Strathmore Bristol Vellum 100 lb. (series 300) without eye strain (at three solid hours of use). So, heavy paper in full sunlight... not a problem. For those of you who are tacking your work to a window, this is a serious upgrade. I do not know about it's reliability. It's pretty flexible. If I had a guess, it's week point would be the mico-USB port. Conclusion: Inexpensive, acceptably bright, Mitsubishi Acrylic Panel, super thin and light. I don't like being tethered to a computer (or potentially an outlet) for a power source. For the price, I can live with that...