Brand NEW! Including 90 Days USA Factory Warranty. The black version of the Sony MDR-ZX110 Stereo Headphones utilize 30mm dynamic dome drivers with PET diaphragms in a closed-back supra-aural "on-ear" design to deliver an extended low frequency response of 12 to 22,000 Hz with a sensitivity of 98 dB/mW into a 24 ohm load. For improved portability, the earcups can swivel flat and fold up into a more compact form factor. A flat Y-type cable design helps prevent tangles and terminates in an L-shaped stereo mini plug. Flat Y-Cable Helps prevent the cable from tangling Foldable Earcups Swivel flat and fold up for improved portability Headphone Driver Size 1.2" / 30 mm Design On-Ear (Supra-aural) Earcup Style Closed-Back Frequency Response 12 Hz to 22 kHz Impedance 24 Ohms Maximum Sound Pressure Level (SPL) 98 dB Maximum Power Handling 1000 mW Audio Connector to Source 1/8" / 3.5 mm TRS Right-Angled Weight 4.23 oz / 120 g Packaging Info Package Weight 0.5 lb Box Dimensions (LxWxH) 7 x 6 x 2" - All international buyers are responsible for all tax, duties and/or customs fees.