Sennheiser SC 135 USB-C is a single-sided headset with 3.5 mm jack and detachable USB-C cable, optimized for flexible UC professionals working on both PC and mobile devices. Sleek minimalistic design and great sound for calls and multimedia make this a convenient single solution for all your audio needs. Sound profiles adjust automatically to communication and multimedia use. A natural listening experience with Sennheiser voice clarity and noise-cancelling microphone optimize Speech intelligibility and an in-line call control unit enables seamless call management. The bendable Boom arm folds discreetly into the headband when not in use, giving a more streamlined appearance.