Bose QuietComfort SC - headphones with noise-cancelling technology

Depth: 76.2 mm | Number of simultaneously connected devices (max): 2 | Ear coupling: Circumaural | Fast charging: Yes | Charging source: USB | Battery type: Built-in battery | Detachable cable: Yes | Battery operated: Yes | Battery recharge time: 2.5 hours | USB Type-C ports quantity: 1 | Volume control: Button | Fast charging time: 15 min | Bluetooth version: 5.1 | Height: 184 mm | Wearing style: Head-band | Width: 152.4 mm | Recommended usage: Music/Everyday | Control unit type: On-ear control unit | Control type: Buttons | Headset type: Binaural | Cables included: Audio (2.5mm to 3.5mm) | Weight: 240 g | Cables included: USB Type-C | Product colour: Black | Wireless range: 9 m | Bluetooth: Yes | Connectivity technology: Wired & Wireless | Noise canceling: Yes | Warnings: Keep away from children. | Carrying case weight: 180 g | Warnings: Do not use near sources of heat or flame. | Warnings: Regularly check the condition of the batteries to prevent leaks.