Hi, I have seen this lamp at the Christmas market and I now decided to buy this. She is really very nice and keeps its promises. Unfortunately, the assembled but not the lightest. The lamp is structurally divided into 5 levels. Level 1-3 go very easy and simple. It is necessary to work very closely here. For this I have used 10 min. Level 4-5 (closing of ball) took me about 30 minutes and a lot of nerve! ;-) With the last two levels will set the lamp energized and closed to the ball. Unfortunately, these steps are not explained in the manual. Here it is helpful reinzuschauen at Youtube times. As a small tip. I have a LED lamp with color change and remote control for 18 to buy. Now this is decorative on the cabinet and I can customize the colors depending on the occasion comfortably by remote control.