Bowers & Wilkins PX 7 SG, Wireless Over-Ear Headphones, Adaptive noise cancelling, Bluetooth Audio - Bluetooth 5.0 with aptXTM Adaptive, Built-in battery with up to 30 hours of battery life with active BT + ANC, App for setting up and adjusting the headphones, 4 Microphones for ANC, 2 Microphones for phonecalls with CVC2 (Clear voice communication v2), USB-C (audio, charging port & connection for updates) and 3.5 mm jack input, Impedance: 20 kOhm, THD: <0.3% (1 KHz / 10 mW), Net weight: 310 g, Colour: Space grey