Let your music loose with the powerful, clear sound of EXTRA BASS and freedom of Bluetooth connectivity that lets you cut the cord, while pumping it up in style.Even take hands-free calls. They're ready to hit the streets with bass that hits. Feel the power of Extra Bass Made for today’s heavy-hitting bass lines and dropping beats, Extra Bass technology delivers powerful, clear bass sound where it’s hardest to find—in portable speakers and headphones. The result is a full, deep, resonating sound that’s perfect for EDM, Hip-Hop and other music. So push the button, crank it up and let the bass drop. Listen in comfort and style. The self-adjusting headband and soft, cushioned ear cups offer the long-lasting comfort you need for listening to your favorite albums back-to-back. And they look good doing it, too. Enjoy hands-free calls A built-in button and mic on the headband enables you to take hands-free calls from selected smartphones while listening to music. Switch easily between songs and calls with no need to remove your headphones.