Potentially crushing the BOSE QuietComfort headphones like a bug, the Sennheiser PXC 450 NoiseGard headphones are available for £299 (or just over £200 if you shop around) and boast 20 hours use on one AAA battery plus the ability to function as normal headphones when that 20 hours expires. Sennheiser’s unique “Active TalkThrough” button will […]