Aftershokz most advanced wireless headphones yet, now in 2 sizes to maximize comfort and ensure a secure fit, the Aeropex Mini has a .5-inch shorter band size. Engineered for premium sound and a long-lasting battery to keep you aware and motivated to power through any workout. The open-ear design powered by bone conduction technology allows for total awareness of surroundings and bud-free, comfortable listening. 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. An IP67 rating makes these completely sweat and waterproof to welcome intense workouts and extreme weather (not intended for swimming). A moisture detection alert ensures safe charging. Designed for athletes, these lightest wireless headphones stay put for comfortable all-day listening while keeping you motivated and aware of your surroundings.