How long is the 4-hour work week audiobook?

What is the concept behind the 4-hour work week?

Tim Ferriss wrote 'The 4-Hour Work Week' for all those tired of postponing their life until retirement, who instead want to live life large and in the moment, right now. In The 4-Hour Work Week, Ferriss promises a way to get all the rewards of working without having to wait until the end of your career.3 may 2020