The Astro bone conduction headphones offer a unique audio experience. Their bone conduction technology transmits sound by vibrations that travel through the skull bones, keeping the ears free and alert to one’s surroundings. With a clear, crisp sound, they are ideal for outdoor activities or for those who need to be aware of what is going on around them. An innovative and comfortable model with up to 7 hours of battery life and IP64 protection against splashes and sweat.