The Project Rock True wireless internal headsets also feature UA TALKTHRU, which basically allows you to answer calls and hold conversations through headphones (and similar technology cradles found in JBL's own wireless headphones). The bull logo on the side of the headset doubles as a button that when pressed activates a noise canceling function for when you are trying to concentrate on the task in question and block external distractions.
These are the second headphones that come from the Project Rock line. The first, the UA Sport Wireless Train Project Rock Edition, was introduced last year. Over-the-ear headphones have a similar sweat-resistant body and are reinforced by JBL audio technology, including 40mm drivers.