LEVELED-UP LISTENING: Bose QuietComfort Ultra Headphones with spatial audio give you an immersive experience that makes music feel more real; CustomTune technology offeres personalized sound, shaped to you WORLD-CLASS NOISE CANCELLATION: These noise cancelling headphones feature Quiet Mode, Aware Mode and Immersion Mode, which combines full noise cancellation and Bose Immersive Audio CRYSTAL CLEAR CALLS: Microphones focus on the sound of your voice and the noise cancelling headphones with mic filter out background noise for the clearest phone calls of any Bose headphones 24-HOUR BATTERY LIFE: Listen longer with up to 24 hours of battery life (up to 18 hours with Immersive Audio), a 15-minute charge offers up to 2.5 hours of play time (up to 2 hours with Immersive Audio) BLUETOOTH WIRELESS HEADPHONES: Advanced Bluetooth 5.3 offers connection within 30 feet of your device; SimpleSync allows you to sync with a Bose smart soundbar so you can listen to TV at your own volume