Question

key feature brief description​

Answer 1

Answer:

key features and brief description of what?

Answer 2

Answer:

Something brief is short and to the point. If you make a brief visit, you don't stay long. If you make a brief statement, you use few words. If you wear brief shorts, you are showing a little too much leg. As a noun, a brief is a condensed summary or abstract, especially a legal summary of a case.

A brief description is a summary of the whole text or whole description. I would say ten short sentences in two paragraphs or six long sentences in a single paragraph format is a brief description. You can choose vocabulary which convey more meaning in a single word for brief descriptions.