Ahhh yes, bone conduction! Clever Chilli Air Bone Conduction Headphones revisit the fact that sound can be conducted to the inner ear by the bones of the skull. This alternate route to headphone listening leaves the ears free to hear…other stuff, like oncoming traffic and people yelling, “Look out!” Safety first! Urban cycling and running come to mind. The lightweight and weatherproof headset comes with a wired controller, and charges its 15 hours of play time via USB. Other useful details: developed from military technology, and conducts via cheekbones. £49.99 (about $78). See ‘em in action right here…