SONY WH-CH720N Active Noise Cancelling, 50 Hrs. Battery life, Multipoint Connection Bluetooth Headset (Black, On the Ear). Dual Noise Sensor Technology and an Integrated Processor V1 takes noise canceling to the next level. Now you can fully immerse yourself in the music. Keep your music playing all day with a battery life that delivers up to 50 hours of power. USB Type-C quick charging gives up to 60 mins of play back from 3 minutes of charge. For total convenience, these Bluetooth headphones can be paired with two Bluetooth devices at the same time. You?ll be able to quickly switch your headphones to either of the two devices at the touch of a button, making the CH720N the ideal work from home headphones. Precise Voice Pickup Technology uses beamforming microphones to allow the headphones to pick up voices clearly and accurately for hands-free calls. Just say ?OK Google? or ?Alexa? to activate your preferred voice assistant. Automatically optimizes volume based on your environment learning your behavior and recognizes locations that you frequently visit. Boost the quality of compressed music files and enjoy streaming music with high quality sound through DSEE.