Key Features Immersive, precision engineered high fidelity sound with advanced noise cancelling Eight active noise cancelling microphones monitor surrounding noise 384,000 times a second, cancelling background noise Two additional microphones for telephony and transparency systems Beamforming enables crystal clear calls in noisy cities Bluetooth connectivity Purified air on the go - electrostatic filters removes pollutants as small as 0.1 microns¹ such as Pollen Activated car bon filters capture city fumes² Ergonomically engineered – angled and shaped to optimise acoustic performance and comfort that adjusts to fit all faces Up to 50 hours ANC Audio³ with auto on-off to save energy when not in use Monitor real-time sound exposure and air pollution with the My Dyson app⁴ IN THE BOX: Dyson Zone air-purifying headphones 2 x single Electrostatic Filters Quarter Turn Case USB-C cable ¹Filter efficiency tested to ISO 29463 adapted at max flow setting by an independent third-party laboratory. ² Filter tested in an external lab (N O2, S O2, Ozone) in a laboratory setting (3m³ chamber at 23 ° C and 50 % R H) at max air flow setting. Capture rates may differ depending on real life usage. ³ In low flow mode with Bluetooth on. Performance may vary based on environmental conditions and usage. ⁴App functionality requires a data connection. Standard data and messaging rates may apply. Your mobile device must have Bluetooth [4.0] support for telephony connection. For iOS or Android version compatibility please check Dy son website.