Eye positioning too critical due to short focal length.
Non-standard eyepiece barrel so you can't use a standard 1-1/4" eyepiece to solve problem one.
Carrying case covering comes out of edge trim so it always looks beat up and broken.
The Celestron C90 MAK is a much better choice at about the same price. I wish I had known of the problems before buying. Now I'm stuck with it.
Pros: Right size for vacation use with carrying case
Cons: Extremely critical eye positioning, non-standard eyepiece barrel, case covering comes off.
This review was written in the old system and had content requirements that are different than reviews written today.