This is for an open box item, has never been used. Got as a gift and never used them just sat in the desk drawer.

WH-1000XM4 Wireless Premium Noise Canceling Headphones - Silver

Details from manufacturer

ndustry-leading noise canceling1 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) 2
Touch Sensor controls to pause/play/skip tracks, control volume, activate your voice assistant4, 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 pairing6
Adaptive Sound Control provides a personalized listening experience
Updated design relieves pressure for long-lasting comfort