Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: How well do these work for the ballet?
Document: These binoculars are great for watching sporting events where you want a wide view of the field. You can follow a game without feeling like you are looking through binoculars. However, you'd better be sitting close to the action, because the 4x zoom doesn't allow you to see long distances. They will not work well for wildlife viewing or anything over 50 yards away.
I wear glasses. The autofocus feature does not work well for me. I can see clearly things that are 100 yards away, but things that are 10 yards away are not in focus. That said, the 4X feature is what I want, the field of view is wide and the image is bright so I am keeping these. If I could purchase one of these with the ability to set the focus myself I would give it 5 stars.
I use these glasses to view performing musicians on stage when I am running sound from over a hundred feet away from the stage. They work just fine, although I would like some focal adjustment, it isn't really much of an issue.Nice wide field of view and a good power to make viewing any sporting event, concert, etc. easy. A bit bulky but very well made and quite useful.
Have never enjoyed viewing ballet performances as much as I do now.You have a close view of the entire stage.
We own three pair of these great wide-field binoculars. Almost everyone sitting near us whom we lend these to, even for just a few moments during opera and ballet events, ask where they can buy a pair of their own. Enough said!
This was also true for ballet, since you can see the field of view with your eyes, and you mainly want opera glasses to see one person or thing. Elsewhere on Amazon you can buy a Bushnell binocular for around $15 that gives you a great image at the opera or ballet of one person, with the 8X power magnification.
These binoculars are amazing. They work great for almost anything, but you cannot zoom them in. If you drop them, they will not work anymore. Great for the price though.
Haven't tried them out at a football game year have to wait a couple of months, but they are lighter than my older long distance binoculars and I'm confined they will work just fine.
What they lack in magnification is more than made up for by the wide field of view. They have no adjustment however, so if your eyes are way out of the 20x20 range you might want to consider a pair you can focus. After laser surgery they work great for me.
These are well made, sturdy binoculars, and they are great for the purpose for which they were designed.
Answer: I would say "super" . I used mine at the Daytona 500 and could see clearly from my seats in the grandstands to pit row.