Digital Noise Cancelling with Atmospheric Pressure Optimizing – perfect for flying Sony-Headphones Connect, APP for Android /iOS to use Smart Listening technology to control your ambient sound settings. Smart listening by smart auto-settings automatically adjusts ambient sound to your activity. Ambient Sound mode to hear essential sound without taking your headphones off. Optimized for the Google Assistant with an update. Ask it questions. Tell it do things. It’s your own personal Google, always ready to help. Frequency Response (Bluetooth Communication)- 20 Hz–20,000 Hz (44.1 kHz Sampling)/20 Hz–40,000 Hz (LDAC 96 kHz Sampling, 990 kbps). Sensitivities (dB/mW)- 101 dB/mW (when connecting via the headphone cable with the unit turned on), 97 dB/mW (when connecting via the headphone cable with the unit turned off) High-quality audio with DSEE HX, S-Master HX, LDAC and aptX HD. Frequency response : 3–40000 Hz Battery life up to 10 hours (with wireless noise cancelling). Frequency Range:2.4 GHz band Hands free calling with vibration notification In the box: Carrying Pouch, Plug Adaptor for In-flight Use, Connection Cable, USB Cable Connectivity technology : Bluetooth