Whether you’re casually walking or sprinting to the finish line, the Flex Xtreme delivers the immersive HD sound you need to shatter your physical limits. It features a built-in microphone, intuitive onboard controls, magnetic earbuds, and a lightweight Memory Flex neckband that molds to your body and holds its shape for a comfortable, customized fit. Take your workout intensity to new levels with the Flex Xtreme.