New, unopened product purchased in September 2025. Proof of purchase from a BOSE authorized shop can also be attached. QCULTRAHPBLK ● Elevate Your Listening Experience Experience unprecedented quiet with the world's most advanced noise cancellation. Groundbreaking 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 Feels More Real Bose Immersive Audio pushes the boundaries of listening. Experience immersive listening that makes the sound feel like it's unfolding right in front of you. You'll feel like you're in a VIP seat at a concert. For those who want overwhelmingly realistic sound that you can almost touch. Enjoy a listening experience like never before, 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 the sounds around you or have conversations without removing the earcups. Immersion Mode allows you to enjoy Immersive Audio with full noise cancellation. 【Specifications】 Included Items: 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 provides up to approximately 150 minutes of use Bose Model Name...QuietComfort Ultra Headphones