OpenRun is our lightest headphones to date and are engineered with outstanding sound, a long-lasting battery, and Quick Charge to keep you aware and motivated while you power through any workout. Our open-ear design, powered by bone conduction technology, allows for total awareness of surroundings and bud-free, comfortable listening. Big 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.