Freedom perfected in a truly wireless design, w/industry-leading noise canceling powered by Sony’s proprietary HD Noise Canceling Processor QN1e. Form meets function w/up to 24 total hours of battery life w/quick charging, touchpad controls, premium sound quality, & smart features like Wearing Detection & Quick Attention Mode Features: Industry-leading noise canceling, 24bit audio signal processing delivers dramatically improved sound quality, Up to 24 hr battery life, 10min quick charge for 90min of play time, L/R simultaneous Bluetooth® transmission, Smart Listening by Adaptive Sound Control automatically switches to ambient sound mode based on your activity, Use app to control your ambient sound settings, Easy & clear hands-free calling, Wireless freedom w/BLUETOOTH® technology & NFC.