Our open-ear design, powered by bone conduction technology, allows for total awareness of surroundings and bud-free, comfortable listening. Available in 2 sizes to maximize comfort and ensure a secure fit. OpenRun Mini has a 0.83 inch shorter band size. An IP67 rating makes these completely sweat and waterproof to welcome intense workouts and extreme weather. A moisture detection alert ensures safe charging. Not intended for swimming. Powered by patented 8th generation bone conduction, Bluetooth 5.1, and PremiumPitch™ 2.0+, OpenRun delivers clear sound, powerful volume, and a rich bass. Meet your new favorite training partner. Designed for athletes, our wireless headphones stay put for all-day listening while keeping you motivated and aware of your surroundings.  With 8 hours of battery life and easy commands such as play, skip, pause, and back-a-track, you can enjoy music, calls, audiobooks, and podcasts all day long. OpenRun also features a 10-minute Quick Charge for up to 1.5 hours of battery life.