New, unopened product purchased in October 2025. Listing due to collection reorganization. ● Elevate Your Listening Experience Experience unprecedented quiet with the world's most advanced noise cancellation. Revolutionary Bose Immersive Audio delivers more immersive sound, regardless of content or source. Sophisticated design and luxurious materials create amazing comfort. Take the emotional impact of music to a new level. ● Immersive Audio. Everything, More Real. Bose Immersive Audio pushes the boundaries of listening. Experience immersive listening as if the sound is unfolding right in front of you. Feel like you're in a VIP seat at a concert. For those seeking overwhelmingly realistic sound that you can almost touch. Enjoy an unprecedented listening experience where sound resonates naturally. ● World-Class Over-Ear Noise Cancelling Headphones The QC Ultra Headphones, with even better active noise cancellation than previous products, provide solid support for moments when you want to concentrate. Use Quiet Mode when you want to focus on work or music without being disturbed. If you want to enjoy content while paying attention to your surroundings, switch to Aware Mode to hear ambient sounds and have conversations without removing the earcups. Immersion Mode allows you to enjoy Immersive Audio with full noise cancellation. 【Specifications】 Included: Carrying case, USB (A to C) cable (0.5 m), 3.5 mm to 2.5 mm audio cable (1 m) Weight: 253g Dimensions: 140x195x50mm Bluetooth version: 5.3 Continuous playback time: Approximately 24 hours (up to 18 hours with Immersive Audio) Charging time: Approximately 3 hours Quick charge: 15 minutes of charging for up to 150 minutes of use Bose Model Name...QuietComfort Ultra Headphones