OpenRun Pro 2 - BlackProviding up to 12 hrs. of audio and astounding sound quality, the Shokz OpenRun Pro2 headphones will go the distance with you, so you'll never be without your favorite tunes on your workout. DETAILS DualPitch technology blends bone conduction for clear mids and highs with air conduction for deep bass 3D audio with a custom algorithm that assigns each sound element to a dedicated driver, creating a balanced, dynamic soundscape DRC technology ensures