Dyson has taken its first step into wearable technology, with an eye-catching pair of over-ear headphones that come with an air-purifying mouth visor. Best known for vacuum cleaners, Dyson has diversified in recent years with products such as fans and a hairdryer. The headphones - dubbed Dyson Zone - are designed to tackle the growing issue of air pollution. One reviewer said they would definitely "turn heads in the street". The headphones go on sale in the autumn. The noise-cancelling headphones come with a motor, fan and air filters in each ear cup. Air is sucked through the filters, capturing allergens and pollutants such as nitrogen and sulphur dioxide and brake dust. The product has four hours' battery life in low-filtration mode, according to Pocket-lint, or 1.5 hours in high filtration. Chief engineer Jake Dyson said: "Air pollution is a global problem - it affects us everywhere we go." The Dyson Zone has been six years - and 500 prototypes - in the making.
