Sennheiser HD 400S Over-the-ear Headphones, Black The HD 400S feature a single-button smart remote conveniently located on the cable, allowing you to control your music and take calls with ease, and the robust foldable design makes these headphones durable and compact enough to take anywhere. Sennheiser dynamic drivers deliver a well-extended sound response with dynamic bass. Features: Renowned Sennheiser sound quality for a unique listening experience; Built-in microphone and remote control for controlling calls and music; Closed-back around-ear headphones reduce unwanted background noise for your comfort; Lightweight and foldable headphones for easy storage.