Sonitrek Solo Pro 2 Bluetooth 5 Bone Conduction Sports HeadphonesEnter a world of total freedom with the Solo Pro 2. Sonitrek's patented multi point bone conduction technology delivers clear, energetic sound without the need for contact with ears, leaving you free to focus on what moves you. Features Multi point sound delivery technology. Experience four points of contact that deliver sound directly to your eardrum without the need for earbuds that touch the ear or ear canal. Your ears are totally free, as if you