No…50 is not signifiant to anything on these headphones other than the endorsement by musician 50 Cent, who has teamed up with Sleek Audio to produce them. 50 Cent’s Sync by 50 headphones are going to be hitting the market soon and feature on-board playback controls, 40mm drivers in each ear, padded by memory foam cushions. The headphones come in a wireless version with a 3.5mm adapter that can broadcast the signal up to 50 feet away, and allows for up to four simultaneous connections. A detachable wireless cable will let you use them wired as well–and you can even charge them via an included micro USB cable. Look out for them towards the end of the year.