By design, the Sudio B2 Bone Conduction Headphones, weighing a mere 29g and measuring 145x105x48mm, are lightweight, durable, and among the easiest items to find in your bag. Functionally, these open-ear bone conduction headphones use cutting-edge technology to play sound directly to your temples, allowing you to stay focused while being aware of your environment. Urban multitaskers, gym-goers, and cyclists you're welcome.