Maximizing your personal audio experience has never been easier than with SONY ZX-Series Monitor headphones. Built with comfort and performance in mind, there's no need to compromise. Sony® Stereo headphones have 30mm drivers that give out huge trebles and a 2.5 mm audio jack with absolute compatibility. Headphones can plug into almost any audio device including iPhones, computers and to USB devices. Enjoy rich, full frequency response: 30 mm driver units deliver full, balanced sound for a complete listening experience from 12 - 22,000 Hz. Swivel, folding design: Compact for portability yet affording listening flexibility, the swivel, folding earpads let you enjoy music in many ways. Tangle-free cables: The durable, 1.2 m y-type cable resists snags and tangles so you can get caught up in your music, not your cord. *** Specifications:*** Sensitivity (db): 98 dB/mW Driver Unit: Closed supra-aural, Dynamic 30 mm, dome type (CCAW Voice Coil) Frequency Response: 12 - 22,000 Hz Color: Black Plug: L-shaped stereo mini plug Type of Use: Portable, Home, Studio Diaphragm: PET Design: Over-the-head, Monitor Headband: Swivel/Fold, Adjustable Power Handling Capacity: 1000 mW (IEC) 3.5mm female stereo jack to 1/4inch male adapter . This adapter works great for hooking up your 3.5mm headphones to speakers, keyboards, audio mixers or any other device that excepts 1/4inch. HeroFiber® Ultra Gentle Cleaning Cloth HeroFiber® is the most efficient way to clean all optical surfaces. HeroFiber® acts like a magnet for dust, dirt, and oils, so it absorbs without being abrasive or leaving residue, and lasts considerably longer than ordinary cloths.