OPENRUN(AEROPEX WITH QUICK CHARGE)BONE CONDUCTION OPEN-EAR ENDURANCE HEADPHONES Our top-selling wireless sport headphones formerly known as Aeropex now come with new packaging, a quick-charge feature, and a new name. 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.8th Generation Bone Conduction TechnologyLightweight (26g)IP67 Waterproof (Not for swimming) 8-Hour Battery Life + Quick Charge2-Year Warranty