Breakthrough spatial audio for a more immersive listening experience that makes your music feel realer than ever before—no matter the content or source. With world-class noise cancellation and sound tailored to you, the QuietComfort Ultra Earbuds are the ultimate wireless noise-cancelling earbud experience. Bose Immersive Audio pushes the boundary of what it means to listen by taking what you’re hearing out of your head and placing it in front of you. It sounds so real it’s almost like you could reach out and touch it. These earbuds feature breakthrough Bose Immersive Audio, superior comfort, and modes for any musical mood. Simple touch controls and the ability to customize settings with the Bose App make them incredibly user-friendly. The QuietComfort Ultra Earbuds play for up to 6 hours on a single charge, with the case holding up to 3 additional full charges, ensuring you can listen longer without interruption. Key Specifications Headphone Fit: In Ear Microphones: Built-in Microphone Noise Cancelling: Yes Noise Control Type: Adjustable Noise Cancelling Water Resistant: IPX4 Case: Charging Bud Single: 3.12 cm H x 2.01 cm W x 2.44 cm D (8 grams) Case: 6.63 cm H x 5.94 cm W x 2.67 cm D (60 grams) Product Material: Plastic (PC-ABS), Silicone, Metal Product Case Material: Plastic (Hard) Rechargeable: Yes Battery Charge Time: 2 hours Charging Interface: USB-C Wireless Connectivity: A2DP Bluetooth Audio Streaming, HFP Bluetooth Bluetooth Version: 5.3 Bluetooth Range: 9.1 meters Bose App: Bose Music App Packaging Content 2 Bose QuietComfort Ultra Earbuds Bose Fit Kit: 3 pairs of ear tips (small, medium, large) 3 pairs of stability bands (1, 2, 3) Charging case USB-C® (A to C) cable (30.5 cm) Safety sheet Product Features Breakthrough Spatial Audio: What you hear is placed just in front of you, so it’s like you’re listening without wearing earbuds. World-class Noise Cancellation: Quiet Mode engages full noise cancellation so you can focus. Aware Mode feels as if you aren’t wearing headphones at all. Everything Tailored to You: CustomTune tech analyzes your ears, adapts to the shape, and auto-adjusts to personalize the sound and noise cancellation. Comfort and Stability for Any Ear: Nine possible combinations of eartip and stability bands ensure the most comfy and stable fit for your ears. Long Battery Life: The earbuds play for up to 6 hours (up to 4 hours with Immersive Audio) and the case holds up to 3 additional full charges.