Bose QuietComfort Ultra Wireless headphones

Model: Bose QuietComfort Ultra (SKU 880066-1200), color Lunar Blue 
Type: Full-size, over-ear, folding design
 Audio and Noise Reduction
Noise Reduction: Active (ANC), Echo Reduction, adjustable 
Spatial Sound: Immersive Audio – creates a sound effect “outside your head” 
Drivers and frequencies: (exact specifications not disclosed)
Microphones: Built-in – for noise reduction and conversation 
Connectivity
Bluetooth: Version 5. 3, A2DP, AVRCP, HFP, LE profiles, range up to ≈9 m 
Wired connection: 3.5mm audio output via 2.5mm → 3.5mm cable (included)
Power and charging
Battery: up to 24 h battery life (without Immersive Audio), up to 18 h with it 
Full charge: About 3 h via USB-C
Fast charge: ≈15 min charging → ≈2.5 h playback 
Casing and ergonomics
Materials: Plastic, aluminum, ear cushions – artificial protein leather 
Cushions: Removable, material – protein leather 
Controls: Buttons on the cups (volume, tracks, etc.)
Foldable: Yes, for easy transport Wireless headphones