Sennheiser PMX 680 Sports Earbud Headphones (Discontinued by Manufacturer) Sweat and water resistant Neckband headphones for comfortable fit High-output drivers for energizing sound DuPont Kevlar reinforced cable for unmatched sound Generous 2-year guarantee Sweat and water resistant Neckband headphones for comfortable fit High-output drivers for energizing sound DuPont Kevlar-reinforced cable for unmatched sound Generous 2-year manufacturer's warranty