Digital Noise Cancelling lets you listen without distractions Personal Noise Cancelling Optimizing and Atmospheric Pressure Optimizing Wireless freedom with BLUETOOTH® technology and NFC Smart Listening by Adaptive Sound Control automatically adjusts ambient sound to your activity High-quality audio with DSEE HX™, S-Master HX ™ and LDAC Driver Unit 40mm, dome type (CCAW Voice Coil) S-Master HX Yes DSEE HX Yes Input(s) Micro USB, Stereo Mini Jack Frequency Response 4Hz-40,000Hz Frequency Response(Bluetooth® Communication) 20Hz - 20,000Hz (44.1kHz Sampling) / 20Hz - 40,000Hz (LDAC 96kHz Sampling, 990kbps) Frequency Response (Active Operation) 4Hz - 40,000Hz Passive Operation Yes NFC Yes Cord Length Headphone cable (approx. 1.5m, OFC strands, gold-plated stereo mini plug) Plug Adaptor for In-flight Use, Headphone cable (approx. 1.5m, OFC strands, gold-plated stereo mini plug), USB Cable, Carrying Case