Aftershokz Shokz OpenRun Sport Wireless Headphone - Black | 38-S805-ST-BK Open-Ear Design Powered by Bone Conduction Technology PremiumPitch 2.0+ Stereo Sound IP67 Waterproof Lightweight 26g 8 Hours of Music & Calls Magnetic charging cable included - full charge in around 1.5 hours Full Titanium Frame for Secure Fit Warranty: 2 years Aftershokz Shokz OpenRun Sport Wireless Headphone - Black | 38-S805-ST-BK Features Open-Ear ComfortOur 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 .5 inch shorter band size. Outstanding Sound QualityPowered by patented 8th generation bone conduction, Bluetooth 5.1, and PremiumPitch 2.0+, OpenRun delivers clear sound, powerful volume, and a rich bass. Lightweight Secure FitMeet 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. IP67 WaterproofAn 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. 8-Hour Battery LifeQuick ChargeWith 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. Sized Down For A Snug FitBig performance in a smaller size. OpenRun Mini features a comfortable 0.83-inch shorter band than our Standard size, making it ideal for smaller head sizes and for those who prefer a more snug fit.