Shokz OpenRun Pro 2 Sport Headphones, Open Ear Bone Conduction, DualPitch Technology, Sweat Resistant, IP55, Stable Fit, Orange A Release Year 2008 Designed with a durable plastic A Bass Pro Invoice Amount 40.92 Designed with a durable plastic build and easy to clean surface An adjustable auxiliary grip provides added control and comfort during use these headphones provide a stable and comfortable fit through ergonomic ear hooks and a unibody frame reinforced with Ni Ti alloy memory wire DualPitch Technology: Combines bone conduction and air conduction drivers to deliver clear highs and deep bass with minimal vibrations for superior sound quality