This must be one of the most stylish and unique stereo headphones available today that also delivers excellent sound quality and the bass booster provides an acoustically-tight seal for superior sound isolation, deep bass sound and tight bass response. Features: - Direct sound delivering earpad with soft cushion - Swivels for flat and easy portability - Hands-Free phone calls for Smartphones - Sensitivity: 102dB/ mW - Frequency response: 5Hz – 22,000Hz - Cable: 1.2m - 3.5mm adaptor Packaged in a custom Swiss Cougar box What's in the box 1 XSwiss Cougar Copenhagen Wired Headphones 1 X User Manual