Model: WH-1000XM4 WH-1000XM4 Wireless Premium Noise Canceling Headphones | Silver -Never been worn or used-doesn't include instruction booklet i've included a headphone splitter -Industry-leading noise canceling with Dual Noise Sensor technology -Next-level music with Edge-AI, co-developed with Sony Music Studios Tokyo -Up to 30-hour battery life with quick charging (10 min charge for 5 hours of playback) -Touch Sensor controls to pause/play/skip tracks, control volume, activate your voice assistant, and answer phone calls -Speak-to-chat technology automatically reduces volume during conversations -Superior call quality with precise voice pickup -Wearing detection pauses playback when headphones are removed -Seamless multiple-device pairing -Adaptive Sound Control provides a personalized listening experience -Updated design relieves pressure for long-lasting comfort