UA Headphones Wireless - Engineered by JBL are designed by athletes for athletes to set the new standard of what a sport headphone should be. Sweat-proof and built to withstand any workout, they’re guaranteed to be the most comfortable headphones you’ll ever wear. They’ll never hurt, fall out, or get in your way. UA Headphones Wireless - Engineered by JBL are Bluetooth enabled freeing you from wires and distractions. A 3-button mic handles volume, music/calls, and works with both iPhone and Android devices. Included with purchase is a membership to MapMyFitness Premium, allowing you to monitor your health and track your progress. Power every workout with JBL Signature Sound so you can finish strong. UA Headphones Wireless - Engineered by JBL – this is the sound of high performance.