Turn down the world’s noise with the long-lasting noise cancellation performance.1 Featuring Dual Noise Sensor technology and an Integrated Processor V1, the WH-CH720N allows you to fully immerse yourself in music without any distractions. Ergonomically designed to be lightweight, comfortable, and with up to 35 hours of battery life, you’ll almost forget you’re wearing it. Key Features Sony’s lightest Wireless Noise-canceling headband ever. Up to 35-hour battery life with quick charging (3 min charge for up to 1 hour of playback). Super comfortable and lightweight design. Adjustable Ambient Sound mode and Adaptive Sound control features tailors sound to suit the environment around you. Take noise canceling to the next level with Sony’s Integrated Processor V1, so you can fully immerse yourself in the music. High sound quality and well-balanced sound tuning. Crystal clear hands-free calling and voice assistant with Precise Voice Pickup technology. Multipoint connection allows you to quickly switch between two devices at once. Boost the quality of compressed music files and enjoy streaming music with high quality sound through DSEE™. Build-in microphone