The JBL T450BT is entirely wireless and has no port that a user can use to connect to a playback system using an external cable. It comes with the basic controls to use the T450BT, which can be used to conveniently use the headphone. The JBL T450BT are headphones with a decently balanced sound and a lightweight on-ear build that is comfortable enough to run and work out. Compared to other headphones available at the same price, the build quality of the headphone is not as robust. It has no headphone jack or wired functionality, which for some listeners could be a deal-breaker.