For the price you can not say anything. The glasses fit me and my husband very well, the assembly works even without instructions. You have to insert the battery (small round, supplied) in the middle of the back and use the side handles. Easy, and after repeated button (upper right mini knobs) she then funktionniert flawlessly with our Smart TV from Samsung and a 3D Blu-Ray. It is very easy and is even after 2 1/2 hours more comfortable without pressing on the nose, darkens a little, but what do all 3D glasses. The glasses are a bit rabbelig and is no bigger than a 3D glasses that you get hired at the movies. Because I had expected a little more, do not know why! They met in my opinion its purpose, and is quite easy to use as a layman and adequate for a comfortable 3D movie night.
