Perfect workout headphones that are snug and secure so the earphones stay put while running, biking or at the gym. Built-in magnets let you attach the two headphones together when not using, and wear like a necklace around your neck, a convenient way to carry around when you don't need them. The rechargeable long battery life means you get 10 hours of continuous music or can relax with 240 hours of standby time when powered with a 5V external charger.