For product: It's a little bigger than I thought but not further disturbing. There are 4AA batteries needed or possible output a power supply via USB or with standard power supplies to 6V (which are not received)! One can also use both and does not necessarily remove the batteries when it operates on electricity. As soon as the plug of the cable is in there, he runs even more about this without going through the battery. Good solution in my opinion. The brightness is very bright, there are 3 steps I use mostly to illuminate only the first since it is sufficient all my table! The neck of the lamp is a little hard to read is due so as with other reviews. Is zulösen so by wrapping a wire around his neck and even the neck is stable.
