Does the job well at a very good price.  The case is light weight, wouldn't provide any protection if you dropped it.  The focus paddle is a bit loose, could be a bit stiffer, I think, for better feel.  There is that black effect that happens if you don't get the glasses at the correct distance from each other, I forget the name for it.  But, over all this is an excellent value product, would have been $140 or more 30 years ago.