The Sennheiser HD 400S is crafted for those who seek a dependable audio companion for their daily commute or home use. Built on 80 years of German audio expertise, these headphones prioritize a balanced sound profile and a clean, minimalist aesthetic that fits seamlessly into any style, from business casual to athletic wear. Designed as an on-ear (supra-aural) headset, the HD 400S focuses on delivering natural sound reproduction without overloading the ears. The build quality leverages innovative technologies and reliable components, ensuring a longer operational lifespan compared to standard entry-level headphones. For the modern user, the HD 400S integrates essential functionality directly into the cable, featuring a built-in microphone and an inline volume switch for effortless control over calls and music playback. This makes it an ideal choice for users who prefer the stability of a wired connection over wireless alternatives. Comfort is central to the design, utilizing eco-friendly materials that allow for extended wear without fatigue. Whether you are taking a business call or listening to a curated playlist, the HD 400S provides a consistent, high-fidelity experience backed by Sennheiser's rigorous laboratory testing and research standards.