PRODUCT OVERVIEW Hear no evil. The AKG N60NC headphones deliver Grammy award-winning AKG superior sound while also utilizing best-in-class active noise canceling to minimize the disruptive sounds encountered on everything from planes to trains. With up to 30 hours of battery life, you can fully immerse yourself in your music and if the battery dies out, the N60NC can still be used in passive mode. Accented with premium material such as aluminum, memory foam, and leather, this unparalleled listening experience comes magnificently packaged in elegantly crafted lightweight headphones that provide both viewing and listening pleasure. In addition, this ultra-premium audio offering comes complete with first-class features like an exclusive 3D-Axis folding mechanism, a fully-accessorized travel package, a one-button universal remote/mic cable, and a USB charging cable. KEY FEATURES Connection : 3.5MM(1/8") Stereo mini-jack Reduces ambient noise especially when traveling to create a perfect sound environment where you can be alone with your music and yourself Designed for convenient transport and storage thanks to the 3D folding mechanism and the carrying case, you can get up and go with your music at the drop of a high hat Thanks to the 30 hours battery life and the convenient USB charging cable, the N60NC can be enjoyed all the way (and back) Frequency Response: 10Hz – 22kHz; Sensitivity: 123dB SPL/V@1kHz