By design this headphone is lightweight, durable in material, and may be one of the easier items to find in your bag. Technically, the Sudio B2 uses bone conduction technology that plays sound directly to your temples allowing you to stay focused while being aware of your environment. Urban multitaskers, gym-goes, and cyclists - you're welcome. Up to 9 hours of playtime, click buttons, Water resistance IPX5, USB-C charging and Bluetooth 5.3. Airy, expansive, and transparent, the Sudio B2 delivers sound that's optimally well-balanced.