They are sweat-resistant and durable, and definitely the most comfortable headphones you will ever wear. They never pinch, never fall out, and never interfere with your workout. UA Headphones Wireless - engineered by JBL are Bluetooth compatible, so cables will never distract you again. With a 3-button microphone, you can control volume and music/calls on both iPhone and Android devices. With your purchase, you will receive a MapMyFitness Premium membership, allowing you to monitor your health data and track your progress. Enhance every workout with JBL's signature sound for even more powerful results. UA Headphones Wireless - engineered by JBL – that's high-performance sound!.