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. Tech Specs Specifications Article number (SKU) 508598 Transducer principle dynamic, closed-back Wearing style Over-Ear Acoustic principle closed Adapter 3.5mm, angled Cable length 1.4m Weight 217g Frequency response (speaker) 18 Hz to 20,000 Hz Impedance 18 Ω Transducer size 9.7 mm Total harmonic distortion (THD) < 0.5% (1 kHz, 100dB) Frequency response (microphone) 100 to 10,000 Hz Microphone pick-up pattern Omni-directional Wearing style Over-Ear
