Top features: – Extra Bass adds deep, powerful low end at the press of a button – Sweat-resistant and washable design keeps up with your workout – Headphones stay firmly in place with arc support fins – Hands-free calls and music with in-line mic and controls Extra Bass Feel every beat and bassline with Extra Bass, spurring you on while you’re in the gym or out running. Sony Extra Bass Sports MDR-XB510ASB Headphones help you focus on the rhythm as you push yourself to succeed. Sweat-resistant and washable design Keep your headphones clean when you’re done exercising. Sony MDR XB510ASB Headphones are washable, so you can rinse them under a tap. Wear them outdoors with confidence ¿ running in the rain won’t damage them. Headphones stay firmly in place You don’t want to be distracted with loose headphones while you’re training. That’s why the Sony XB510ASB In-ear Headphones feature arc supports to stay firmly in place. They’ll stay put even when you’re moving fast or stretching. Hands-free calls and music Take calls, adjust volume levels or switch tracks while you’re working out. There’s a built-in mic for hand-free calls and controlling your smart device.