Experience world-class noise cancellation with the Bose QuietComfort Ultra Headphones, now quieter than ever. Featuring breakthrough Spatial Audio for an immersive listening experience, these headphones offer unrivaled comfort with their elevated design and luxurious materials. Bose Immersive Audio makes your music feel so real, it's almost like you can reach out and touch it.With CustomTune technology, the headphones adapt the sound to your ear shape for a personalized listening experience. Enjoy up to 24 hours of playback in Quiet or Aware Mode, and up to 18 hours with Immersive Audio. The advanced mic system ensures clear calls, eliminating the need for repeated "huh?" moments.Key features include world-class noise cancellation, multiple listening modes, and customization via the Bose Music App. Designed for ultimate comfort, the headphones feature an adjustable headband and removable protein leather cushions. Whether in a noisy environment or a quiet space, the QuietComfort Ultra Headphones provide the best audio experience.Key Specifications Headphone Fit: Around Ear Circumaural Headband: On Head Adjustable Cushions: Removable Cushion Microphones: Built-in Microphone Noise Cancelling: Yes Noise Control Type: Active Noise Cancelling, Echo Reduction, Adjustable Noise Cancelling Audio cable included: Yes Case: Carry Headphone Dimensions: 19.6 cm H x 14 cm W x 5.1 cm D (0.25 kg) Product Material: Plastic, Aluminum, Protein Leather Product Case Material: Plastic (Hard) Ear Cushion Material: Protein Leather Rechargeable: Yes Battery Life: 24 hours Battery Charge Time: 3 hours Charging Interface: USB-C PORT Wireless Connectivity: Bluetooth, A2DP Bluetooth Audio Streaming, HFP Bluetooth, AVRCP Bluetooth, Bluetooth Low Energy Bluetooth Version: 5.3 Bluetooth Range: 9.1 meters Bose App: Bose Music App Packaging Content Bose QuietComfort Ultra Headphones Carry case 3.5 mm to 2.5 mm audio cable USB-C® (A to C) cable (50.8 cm) Safety sheet