The Sync by 50 Over-Ear wireless headphones were designed in collaboration with rapper 50 Cent. They feature wireless "Kleer Technology," and up to 17 hours of continuous playback from one charge. The over-ear headphones have a built in mic and easy access audio controls. The Sync by 50 Over Ear also feature a Shatterproof UFP adjustable headband. The wireless headphones also offer "Lossless" audio which allows for up to 4 pairs of headphones to tie to one audio source.