Lightweight, Foldable Headphones
The HD 400S features a one-button smart remote, which allows you to control music and take calls with ease, and the sturdy folding design makes these headphones durable and compact enough to be taken anywhere.

For a Unique Listening Experience
Sennheiser’s dynamic drivers deliver a well-extended sound response with dynamic bass for a unique listening experience and closed-back around-ear headphones reduce unwanted background noise for your comfort.
What’s in the Box:
- HD 400S around-ear headphones
- RCS 400 detachable single-sided cable with 1-button remote and 3.5 mm angled plug
Product Features:
- Adapter: 3.5mm, angled
- Cable length: 1.4m
- Wearing style: Over-Ear
- Frequency response (microphone): 100 to 10,000 Hz
- Transducer size: 9.7 mm