Yes, is real, this lens was made out of binocular lens by a passionate student of engineering and technology.
His name is Bharath P, is a student from India who likes engineering and inventions. The binocular lens has a 25 mm diameter and is fixed in the audio jack.
See below the photo demonstration of Macro Lens for Google Nexus One. Congratulations Bharath for this invention. You can also check the blog of this student at this link.