I bought this telescope to use it with a Newton reflector telescope with a mirror diameter of 114mm and 900mm focal length. Such "slow" telescopes (Here f / 7.9) make no great demands on eyepieces, with faster telescopes (f / 5 and less) is different. The eyepiece comes in a plastic box, nevertheless covers are again on top and bottom. So it may sometimes outside the box are without einzustauben equal. For someone who knows only the supplied Kellner eyepieces of his entry-level telescope eyepiece This is a good step forward. When Jupiter finally no more colorful rings, more attention than before plus infinitely variable up to the limits of the possible can zoom from the atmosphere. What more do you want. Unfortunately the papierige shipping carton was pretty battered at (0.5 star deduction), the really stable plastic container but prevents worse. I have elsewhere bought an eyepiece that came upholstered in bubble wrap envelope. The envelope was undamaged. The point is ... A description / care instructions was missing (again 0.5 star deduction), but by trying to get out quickly what to what has to be rotated. A scale outdoor shows roughly what eingestelt to focal length. The focus remains when zooming do not get, but who demands that should insert a lot of money when he goes shopping. By corrugation it fits comfortably in the hand, the eye relief is good and allows comfortable viewing experience. When shaken it clatters quite easily, but when I press from below against the eyepiece is the clatter away. So it's nothing "interior" of what is loose but this is the "game" of mechanics. Nevertheless, it does not run by itself, one must turn and then remains set. Separated moon, Jupiter, Orion Nebula, Mizar A and B - more I could not observe in the great weather of the last few weeks. But what I could see was better than before, so I'm satisfied. Who wants to have no Okularköfferchen buys this eyepiece.