Rosetta Stone German Level 4 Interactive language software with proprietary speech-recognition technology Deepen your understanding of the language; expand on what you learned in Levels 1, 2 and 3 Engage in advanced-level conversations; share ideas and opinions; move toward fluency Audio Companion for CD or MP3 player; learning application for iPhone or iPod Touch device Language-enhancing games; live online lessons; includes headset with microphone