Springing from Audio-Technica's rich heritage in professional audio the ATH-MSR7 Over-Ear High-Resolution Audio Headphones are designed to reproduce Hi-Res Audio allowing users to hear music the way it was intended The over-ear headphones are outfitted with exclusive 45 mm True Motion Drivers which utilize lightweight voice coils a custom-mounted printed circuit board and specially designed diaphragm to improve transient response and minimize sound distortion for rich detailed audio reproduction The ATH-MSR7 headphones also feature multi-layered air damping technology for extended mid-to-low frequency response The housings designed to "mirror" the full shape of the ear are constructed of an aluminum/magnesium mix layered to provide a lightweight rigid structure that reduces unwanted resonance Three precisely placed vents within these layers work to control air flow and improve dynamics The over-ear headphones' highly flexible swivel design with soft memory foam ear pads and headband ensure lasting comfort even during the longest listening sessions And with three detachable cables (standard 1 2 m (3 9') and 3 0 m (9 8') cables plus a 1 2 m (3 9') cable with in-line controls and microphone for compatible smartphones and other devices) the ATH-MSR7 can provide Hi-Res Audio anywhere you go