APTX WIRELESS HD HIGH FIDELITY SOUND - Premium 40mm stereo dynamic drivers with aptX technology for superior premium sound quality. Enjoy warm midrange, crisp highs and deep bass. 20 Hours of Playback Time and 800 Hours Stand by Time Included LATEST BLUETOOTH V4.1 CSR + EDR CVC 6.0 ACTIVE NOISE CANCELLING - Reduce outside distracting ambient noise by up to 90% fast. Adaptive ANC technology effectively reduces the noise of city traffic, airplane noise, lawn mowers, machinery, or office background noise SUPER COMFORTABLE AND MORE DURABLE THAN THE REST - Stainless Steel Band with super soft protein earpads withstand drops and hard use. Foldable and Compact. Comes with a Hard Shell Durable Carrying Case and 3.5mm Audio Cable for use on a Plane or as a backup audio option.