The speaking module is the same for the general and academic exam. The test takes eleven to fifteen minutes to complete. Unlike some other speaking exams you have your own examiner. The examiner does not make up the questions you will be asked - the questions are written down on a sheet called the 'examiner frame'.
The only part where the examiner has more control is the third part of the test where the examiner can change the language level to what is considered suitable to the skill that you have shown in the first parts of the test. The conversation is recorded, so if the idea makes you nervous, practice with a recorder to make sure you are used to this happening.
Here are the different parts of the test (you can also see the parts in more detail after this introduction):