Over-ear, Noise-isolating Headphones. Connectivity Technology: Wired 30mm Neodymium Driver. 110 dB/mW Power off, 115 dB/mW Power on Up To 80 Hours Of Battery Life Frequency response:10-22,000 Hz Impedance (Ohm)- Power ON 220 ohm, OFF 45 ohm (at 1 kHz).Cord Length:3.94 ft SONY MDRZX110NC NOISE CANCELLING HEADPHONES BLACK With a noise-canceling design, these Sony MDRZX110NC/B over-the-ear headphones prevent unwanted outside noises from interfering with your listening experience. The Supra-Aural technology and 30mm drivers provide dynamic, clear tones. Product Features Over-the-ear design With foam ear cushions provides comfort during extended listening sessions. Noise cancellation Effectively blocks out distracting background noises, so you can enjoy a focused, immersive sound environment. 3.9' cord Permits freedom of motion. The gold-plated, L-shape stereo mini plug enables simple connection to a wide range of devices. 10Hz - 22kHz frequency response Helps ensure faithful sound reproduction. 115dB/mW sensitivity (power on); 110dB/mW sensitivity (power off) For robust audio. Includes R03 AAA battery & In-flight plug adapter (single/dual) The noise or skipping can cause likely by poor contact between the headphone jack and the port. Make sure to clean the jack with a dry cloth regularly. If the noise or skipping occur only on high-resolution audio format files such as WAV, FLAC, ALAC, AIFF, or DSD, reimport the files or convert the files to another file format such as MP3 or AAC.