SOUL Electronics SJ27SL Jet Pro Hi Definition Noise Cancelling Headphones, Silver Glamorous Design. Improved Engineering - Redesigned from the original JET headphones, the JET PRO is the ultimate noise cancelling headphones engineered to perfection. Tested by Military Noise Cancelling & Audio Expert - A new 4 microphone system located inside and outside the headphone to help better detect and reduce unwanted noise for superior audio. Professional Audio Cable - Enhanced audio quality by including a secondary pro audio cable with 4X silver plated 99.99% high purity oxygen free copper stranded wire. Ultra Comfort - The Complete over-ear design with proprietary ear pads provides more ear room for overall comfort. Passively cancels out exterior noise and enhances stability. Made For Travel - Designed with one goal in mind; giving the active traveler and music enthusiast the best listening experience. It also includes a fashionable leather carrying pouch and adapters for your travelling needs. Connectivity technology : Wireless